ABCD

Two Key System

Our company can be your one-stop shop for decentralization.
Our company can be your one-stop shop for decentralization.

Historical Dates

Evidence suggests the 1899 transactions occurred as part of a global event centered around a deity associated with the lotus flower.
Evidence suggests the 1899 transactions occurred as part of a global event centered around a deity associated with the lotus flower.

Pilot Priority List

CELEBRATE: Serve passengers tiered cakes shaped like the airspace class diagram
CELEBRATE: Serve passengers tiered cakes shaped like the airspace class diagram

Everyday Carry

Someday I just know I'm going to encounter a problem that requires 500 flashlights and 700 knives with weird holes in them, and on that day I won't be caught unprepared.
Someday I just know I'm going to encounter a problem that requires 500 flashlights and 700 knives with weird holes in them, and on that day I won't be caught unprepared.

Cursed mRNA Cocktail

Serve one each to guests whose last cursed cocktail was more than 2 months ago.
Serve one each to guests whose last cursed cocktail was more than 2 months ago.

What If? 2 Flowchart

Don't worry, the dogs are all fine. That's actually kind of the problem.
Don't worry, the dogs are all fine. That's actually kind of the problem.

Rotation

It's okay, we can just feed the one-pixel image into an AI upscaler and recover the original image, or at least one that's just as cool.
It's okay, we can just feed the one-pixel image into an AI upscaler and recover the original image, or at least one that's just as cool.

Interruption

It's been extra bad ever since my GPS got stuck on Phoebe Judge mode.
It's been extra bad ever since my GPS got stuck on Phoebe Judge mode.

Things You Should Not Do

Now I'm tempted to start telling people that I secretly don't actually know how to do any physics calculations, and so all the answers in What If are based on me actually trying to do the thing and then reporting what happened, but phrased as if it's hypothetical.
Now I'm tempted to start telling people that I secretly don't actually know how to do any physics calculations, and so all the answers in What If are based on me actually trying to do the thing and then reporting what happened, but phrased as if it's hypothetical.

Artemis Quote

Another option: "It is an honor to be the first human to set foot on the moon."
Another option: "It is an honor to be the first human to set foot on the moon."

First Internet Interaction

To that stranger on the KOOL Tree House chat room, I gotta hand it to you: You were, ultimately, not wrong.
To that stranger on the KOOL Tree House chat room, I gotta hand it to you: You were, ultimately, not wrong.

Universe Price Tiers

In Universe Pro®™ the laws of physics remain unchanged under time reversal, to maintain backward compatibility.
In Universe Pro®™ the laws of physics remain unchanged under time reversal, to maintain backward compatibility.

America Songs

Juraaaassic Park, Juraaaassic Park, God shed his grace on theeeee
Juraaaassic Park, Juraaaassic Park, God shed his grace on theeeee

Cloud Swirls

'Why did you get into fluid dynamics?' 'Well, SOME planet has to have the coolest clouds, odds are it's not ours, and rockets are slow.'
'Why did you get into fluid dynamics?' 'Well, SOME planet has to have the coolest clouds, odds are it's not ours, and rockets are slow.'

Tetherball Configurations

Ground-pole-ball-pole can be fun if you shake the first pole to get the second one whipping around dangerously, but the ball at the joint gets torn apart pretty fast.
Ground-pole-ball-pole can be fun if you shake the first pole to get the second one whipping around dangerously, but the ball at the joint gets torn apart pretty fast.

Physics Safety Tip

In general, avoid exposure to any temperatures, pressures, particle energies, or states of matter that physicists think are neat.
In general, avoid exposure to any temperatures, pressures, particle energies, or states of matter that physicists think are neat.

Age Milestone Privileges

If you reach 122, you get complete unrevertible editorial control over Jeanne Calment's Wikipedia article.
If you reach 122, you get complete unrevertible editorial control over Jeanne Calment's Wikipedia article.

Gen Z

Curdled milk, of a peculiar kind, made after a Bulgarian recipe and called "yaghurt," is now a Parisian fad and is believed to be a remedy against growing old. A correspondent who has tried it, says he would prefer to die young. (1905, The Elk Falls Journal)
Curdled milk, of a peculiar kind, made after a Bulgarian recipe and called "yaghurt," is now a Parisian fad and is believed to be a remedy against growing old. A correspondent who has tried it, says he would prefer to die young. (1905, The Elk Falls Journal)

Unreliable Connection

NEGATIVE REVIEWS MENTION: Unreliable internet. POSITIVE REVIEWS MENTION: Unreliable internet.
NEGATIVE REVIEWS MENTION: Unreliable internet. POSITIVE REVIEWS MENTION: Unreliable internet.

Coffee Cup Holes

Theoretical physicist: At the Planck length, uncountably many.
Theoretical physicist: At the Planck length, uncountably many.

Complex Vowels

Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.
Pronouncing [ṡṡċċḣḣẇẇȧȧ] is easy; you just say it like the 'x' in 'fire'.

Scientific Field Prefixes

Massage: Theoretical (10), Quantum (6), High-energy (2), Computational (1), Marine (1), Astro- (None)
Massage: Theoretical (10), Quantum (6), High-energy (2), Computational (1), Marine (1), Astro- (None)

Asking Scientists Questions

'Does the substance feel weird to the touch?' is equally likely to get the answers 'Don't be ridiculous, you would never put your hand near a sample. We have safety protocols.' and 'Yeah, and it tastes AWFUL.'
'Does the substance feel weird to the touch?' is equally likely to get the answers 'Don't be ridiculous, you would never put your hand near a sample. We have safety protocols.' and 'Yeah, and it tastes AWFUL.'

Chemtrails

Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.
Ants have reverse chemtrails--regular citizens spraying chemicals everywhere they go to control the government.

Omnitaur

"My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.
"My parents were both omnitaurs, which is how I got interested in recombination," said the normal human.

Proxy Variable

Our work has produced great answers. Now someone just needs to figure out which questions they go with.
Our work has produced great answers. Now someone just needs to figure out which questions they go with.

Air Gap

You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.
You can still do powerline networking, but the bitrate does drop a little depending on the lightbulb warmup and cooldown delay.

Deepfakes

If so great a deductive mind as Arthur Conan Doyle can be fooled by the Cottingley Deepfakes, what chance do we mortals have? Soon our very reality will be dictated by the whims of Frances (9) and Elsie (16).
If so great a deductive mind as Arthur Conan Doyle can be fooled by the Cottingley Deepfakes, what chance do we mortals have? Soon our very reality will be dictated by the whims of Frances (9) and Elsie (16).

Physics Cost-Saving Tips

I got banned from the county fair for handing out Helium-2 balloons. Apparently the instant massive plasma explosions violated some local ordinance or something.
I got banned from the county fair for handing out Helium-2 balloons. Apparently the instant massive plasma explosions violated some local ordinance or something.

Chemicals

It's hard to believe, but lots of kids these days ONLY know how to buy prepackaged molecules.
It's hard to believe, but lots of kids these days ONLY know how to buy prepackaged molecules.

Capri Suns

[As security is dragging me away] "Come on, at least I didn't make the mistake in the other direction!"
[As security is dragging me away] "Come on, at least I didn't make the mistake in the other direction!"

Minkowski Space

My liege, we were able to follow the ship into Minkowski space, but now they've jumped to Hilbert space and they could honestly be anywhere.
My liege, we were able to follow the ship into Minkowski space, but now they've jumped to Hilbert space and they could honestly be anywhere.

The Best Camera

The best camera is the one at L2.
The best camera is the one at L2.

fMRI Billboard

[other side] If the first word of an instruction you're given starts with the same letter as your crush's name, for that step imagine the experimenter is your crush.
[other side] If the first word of an instruction you're given starts with the same letter as your crush's name, for that step imagine the experimenter is your crush.

Cosmologist Gift

These neutrinos were freshly produced by a local source just 8 minutes ago
These neutrinos were freshly produced by a local source just 8 minutes ago

Meta-Alternating Current

It's always bothered me that you can't cancel out an inverter by putting a second inverter after it.
It's always bothered me that you can't cancel out an inverter by putting a second inverter after it.

Mouse Turbines

It's sad seeing those videos of turbine blade being torn apart in high winds, but it's the only way they can disperse their seeds.
It's sad seeing those videos of turbine blade being torn apart in high winds, but it's the only way they can disperse their seeds.

The Universe by Scientific Field

The math and philosophy people also claim everything, but the astronomers argue that the stuff they study really only comprises a small number of paper surfaces.
The math and philosophy people also claim everything, but the astronomers argue that the stuff they study really only comprises a small number of paper surfaces.

Periodic Table Changes

It's nice how the end of the periodic table is flush with the edge these days, so I think we should agree no one should find any new elements after #118 unless they discover a whole row at once.
It's nice how the end of the periodic table is flush with the edge these days, so I think we should agree no one should find any new elements after #118 unless they discover a whole row at once.

Extended NFPA Hazard Diamond

With most labs, the hushed horror stories are about something like dimethylmercury or prions, but occasionally you'll get a weird lab where it's about the soda machine or the drop ceiling.
With most labs, the hushed horror stories are about something like dimethylmercury or prions, but occasionally you'll get a weird lab where it's about the soda machine or the drop ceiling.

Roman Numerals

100he100k out th1s 1nno5at4e str1ng en100o501ng 15e been 500e5e50op1ng! 1t's 6rtua100y perfe100t! ...hang on, what's a "virtuacy"?
100he100k out th1s 1nno5at4e str1ng en100o501ng 15e been 500e5e50op1ng! 1t's 6rtua100y perfe100t! ...hang on, what's a "virtuacy"?

What If? 2 Countdown

If you don't end the 99 Bottles of Beer recursion at N=0 it just becomes The Other Song That Never Ends.
If you don't end the 99 Bottles of Beer recursion at N=0 it just becomes The Other Song That Never Ends.

Superintelligent AIs

Your scientists were so preoccupied with whether or not they should, they didn't stop to think if they could.
Your scientists were so preoccupied with whether or not they should, they didn't stop to think if they could.

Red Line Through HTTPS

Some organization has been paying to keep this up and it hasn't been removed from search results. Seems like two votes of confidence to me.
Some organization has been paying to keep this up and it hasn't been removed from search results. Seems like two votes of confidence to me.

Astronomer Hotline

Employment statistics have to correct for the fact that the Weird Bug Hotline hires on a bunch of extra temporary staff every 17 years.
Employment statistics have to correct for the fact that the Weird Bug Hotline hires on a bunch of extra temporary staff every 17 years.

Greatest Scientist

"Ow! One of the petri dishes I left on the tower railing fell and hit me on the head! Hey, that gives me an idea..."
"Ow! One of the petri dishes I left on the tower railing fell and hit me on the head! Hey, that gives me an idea..."

Exercise Progression

They said after I got into a routine, I'd enjoy getting progressively stronger and stop whining so much about how hard exercise was. Well, they were half right!
They said after I got into a routine, I'd enjoy getting progressively stronger and stop whining so much about how hard exercise was. Well, they were half right!

Shuttle Skeleton

It's believed to be related to the Stellar Sea Cow.
It's believed to be related to the Stellar Sea Cow.

Or Whatever

Oh yeah, I didn't even know they renamed it the Willis Tower in 2009, because I know a normal amount about skyscrapers.
Oh yeah, I didn't even know they renamed it the Willis Tower in 2009, because I know a normal amount about skyscrapers.

Motion Blur

I can't speak for your other subjects, but MY motion was as smooth and natural as the framerate allowed.
I can't speak for your other subjects, but MY motion was as smooth and natural as the framerate allowed.

Types of Scopes

An x-ray gyroscope is used to determine exactly which toppings they included in the pita.
An x-ray gyroscope is used to determine exactly which toppings they included in the pita.

d65536

They're robust against quantum attacks because it's hard to make a quantum system that large.
They're robust against quantum attacks because it's hard to make a quantum system that large.

Field Topology

The combination croquet set/10-lane pool can also be used for some varieties of foosball and Skee-Ball.
The combination croquet set/10-lane pool can also be used for some varieties of foosball and Skee-Ball.

Voyager Wires

Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.
Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.

Goofs

The film is set in 2018, but when Commander Bremberly chases the hologram through Times Square, there's a billboard for Avengers: Age of Ultron. Depending on the date, that billboard would have been advertising either Infinity War or this movie.
The film is set in 2018, but when Commander Bremberly chases the hologram through Times Square, there's a billboard for Avengers: Age of Ultron. Depending on the date, that billboard would have been advertising either Infinity War or this movie.

Angular Diameter Turnaround

Thank you to Katie Mack for teaching me about this effect, and to Janelle Shane for describing redshifts as 'like galaxies sinking into a pool of dilute blood,' which is how I'll see them from now on.
Thank you to Katie Mack for teaching me about this effect, and to Janelle Shane for describing redshifts as 'like galaxies sinking into a pool of dilute blood,' which is how I'll see them from now on.

Mainly Known For

Oh sure, I know Keira Knightly, from the first movie in that series by The Land Before Time producer. You know, the franchise with the guy from Jurassic Park and Ghostwriter, and script work by Billie Lourd's mom?
Oh sure, I know Keira Knightly, from the first movie in that series by The Land Before Time producer. You know, the franchise with the guy from Jurassic Park and Ghostwriter, and script work by Billie Lourd's mom?

Health Data

Donate now to help us find a cure for causality. No one should have to suffer through events because of other events.
Donate now to help us find a cure for causality. No one should have to suffer through events because of other events.

Crêpe

A medicine that makes you put two dots over your letters more often is a diäretic.
A medicine that makes you put two dots over your letters more often is a diäretic.

Selection Bias

We carefully sampled the general population and found that most people are familiar with acquiescence bias.
We carefully sampled the general population and found that most people are familiar with acquiescence bias.

Maps

OpenStreetMap was always pretty good but is also now *really* good? And Apple Maps's new zoomed-in design in certain cities like NYC and London is just gorgeous. It's cool how there are all these good maps now!
OpenStreetMap was always pretty good but is also now *really* good? And Apple Maps's new zoomed-in design in certain cities like NYC and London is just gorgeous. It's cool how there are all these good maps now!

Deep End

Hey! No running in the back-arc basin!
Hey! No running in the back-arc basin!

Welcome Back

'We're shocked by the Notre Dame fire. Click for our tribute to--' [okay] 'Now that we're all staying at home these past few weeks thanks to this new coronavirus, we--' [okay]
'We're shocked by the Notre Dame fire. Click for our tribute to--' [okay] 'Now that we're all staying at home these past few weeks thanks to this new coronavirus, we--' [okay]

2

It's like sigma summation notation, except instead of summing the argument over all values of i, you 2 the argument over all values of 2.
It's like sigma summation notation, except instead of summing the argument over all values of i, you 2 the argument over all values of 2.

Bad Map Projection: Madagascator

The projection's north pole is in a small lake on the island of Mahé in the Seychelles, which is off the top of the map and larger than the rest of the Earth's land area combined.
The projection's north pole is in a small lake on the island of Mahé in the Seychelles, which is off the top of the map and larger than the rest of the Earth's land area combined.

Lightsabers

A lot of Jedi romances start with this turning into a Lady and the Tramp spaghetti situation.
A lot of Jedi romances start with this turning into a Lady and the Tramp spaghetti situation.

Cutest-Sounding Scientific Effects

The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.
The Stroop-YORP number of a scientific paper is how many of the 16 finalist names (sans 'effect') it manages to casually sneak into the text.

Assigning Numbers

Gödel should do an article on which branches of math have the lowest average theorem number.
Gödel should do an article on which branches of math have the lowest average theorem number.

Entwives

No, we actually do have a woman who's basically part of our fellowship. She lives in Rivendell, you wouldn't know her.
No, we actually do have a woman who's basically part of our fellowship. She lives in Rivendell, you wouldn't know her.

Family Reunion

Grandma says that because of differences in primate and feline lifespans, the cat is actually my 17,000,000th cousin 14,000,000 times removed.
Grandma says that because of differences in primate and feline lifespans, the cat is actually my 17,000,000th cousin 14,000,000 times removed.

Geiger Counter

At first I didn't get why they were warning me about all those birds sitting on the wire, but then I understood.
At first I didn't get why they were warning me about all those birds sitting on the wire, but then I understood.

Weird Unicode Math Symbols

U+2A0B ⨋ Mathematicians need to calm down
U+2A0B ⨋ Mathematicians need to calm down

Taylor Series

The Taylor series should have been canceled after the first term.
The Taylor series should have been canceled after the first term.

Frankenstein Captcha

The distinction between a ship and a boat is a line drawn in water.
The distinction between a ship and a boat is a line drawn in water.

Childhood Toys

The rope keeps breaking, I'm covered in bruises and scrapes, and I've barely reached the end of my driveway, but I don't care--I'm determined to become the first person to commute to work by tetherball.
The rope keeps breaking, I'm covered in bruises and scrapes, and I've barely reached the end of my driveway, but I don't care--I'm determined to become the first person to commute to work by tetherball.

Linguistics Degree

You'd think 'linguistics' would go to someone important in the field, but it's actually assigned to a random student in Ohio who barely graduated and then went into automotive marketing.
You'd think 'linguistics' would go to someone important in the field, but it's actually assigned to a random student in Ohio who barely graduated and then went into automotive marketing.

Instructions

Happy little turtles
Happy little turtles

Rejected Question Categories

You can click to preorder to get a copy of What If? 2 when it comes out 9/13, assuming we all make it past the spider situation(?) on Tuesday(?).
You can click to preorder to get a copy of What If? 2 when it comes out 9/13, assuming we all make it past the spider situation(?) on Tuesday(?).

Spacecraft Debris Odds Ratio

You say this daily walk will reduce my risk of death from cardiovascular disease by 30%, but also increase my risk of death by bear attack by 300%? That's a 280% increased! I'm not a sucker; I'm staying inside.
You say this daily walk will reduce my risk of death from cardiovascular disease by 30%, but also increase my risk of death by bear attack by 300%? That's a 280% increased! I'm not a sucker; I'm staying inside.

Graphic Designers

They might make it past that first line of defense. For the second, you'll need some picture frames, a level, and a protractor that can do increments of less than a degree.
They might make it past that first line of defense. For the second, you'll need some picture frames, a level, and a protractor that can do increments of less than a degree.

Salary Negotiation

"We can do 0.33 or 0.34, but our payroll software doesn't allow us to--" "NO DEAL."
"We can do 0.33 or 0.34, but our payroll software doesn't allow us to--" "NO DEAL."

Galaxies

I know it seems overwhelming, but don't worry; I'm sure most of them have only a few stars, and probably no planets.
I know it seems overwhelming, but don't worry; I'm sure most of them have only a few stars, and probably no planets.

Advanced Techniques

A blow from Emmy's Cutlass of Variations will transport the dragon to a corresponding symmetric position in the Noetherworld.
A blow from Emmy's Cutlass of Variations will transport the dragon to a corresponding symmetric position in the Noetherworld.

Consensus Time

Now, you may argue that the varying hour lengths and feedback effects would cause chaos. To which I say, yeah, and I'm also curious to see how the weekday cycle interacts with it! So, you in?
Now, you may argue that the varying hour lengths and feedback effects would cause chaos. To which I say, yeah, and I'm also curious to see how the weekday cycle interacts with it! So, you in?

Deviled Eggs

The foil on the toothpick represents the blue flash.
The foil on the toothpick represents the blue flash.

False Dichotomy

There are two types of dichotomy: False dichotomies, true dichotomies, and surprise trichotomies.
There are two types of dichotomy: False dichotomies, true dichotomies, and surprise trichotomies.

Qua

Qua qua qua is the sine qua non of sine qua non qua sine qua non.
Qua qua qua is the sine qua non of sine qua non qua sine qua non.

I Shouldn't Complain

Bald-faced hornets are only a 2 on the Schmidt pain index, so I shouldn't complain. The tennis ball ejected from the dryer exhaust vent could have ricocheted off the nest of a much higher-scoring insect before knocking me off the ladder. Really, I'm lucky.
Bald-faced hornets are only a 2 on the Schmidt pain index, so I shouldn't complain. The tennis ball ejected from the dryer exhaust vent could have ricocheted off the nest of a much higher-scoring insect before knocking me off the ladder. Really, I'm lucky.

Outlet Denier

There are regularly placed bumps on the underside just the right size to press the rocker switch on the power strip.
There are regularly placed bumps on the underside just the right size to press the rocker switch on the power strip.

Party Quadrants

Single-elimination might provide more drama, but I think we can all agree that a comprehensive numerical scoring system will let us better judge the party's winner.
Single-elimination might provide more drama, but I think we can all agree that a comprehensive numerical scoring system will let us better judge the party's winner.

For the Sake of Simplicity

For the sake of simplicity, gardeners are assumed to move through Euclidean space--neglecting the distortion from general relativity--unless they are in the vicinity of a Schwarzschild Orchid.
For the sake of simplicity, gardeners are assumed to move through Euclidean space--neglecting the distortion from general relativity--unless they are in the vicinity of a Schwarzschild Orchid.

Greek Letters

If you ever see someone using a capital xi in an equation, just observe them quietly to learn as much as you can before they return to their home planet.
If you ever see someone using a capital xi in an equation, just observe them quietly to learn as much as you can before they return to their home planet.

Rounding

I've developed a novel propulsion system powered by loss of precision in unit conversion.
I've developed a novel propulsion system powered by loss of precision in unit conversion.

Headline Words

Roundly-condemned headlinese initiative shuttered indefinitely.
Roundly-condemned headlinese initiative shuttered indefinitely.

Chorded Keyboard

And even though it all went wrong / I'll stand before the lord of song / with nothing on my tongue but 'I don't understand, I swear I backed up my keyboard config before messing with it'
And even though it all went wrong / I'll stand before the lord of song / with nothing on my tongue but 'I don't understand, I swear I backed up my keyboard config before messing with it'

Data Trap

It's important to make sure your analysis destroys as much information as it produces.
It's important to make sure your analysis destroys as much information as it produces.

Health Stats

You will live on forever in our hearts, pushing a little extra blood toward our left hands now and then to give them a squeeze.
You will live on forever in our hearts, pushing a little extra blood toward our left hands now and then to give them a squeeze.

Rest and Fluids

Remember not to take it easy. Put a hot washcloth on your forehead, remain standing, and breathe dry air while taking lots of histamines. You need to give your body a chance to get sick again.
Remember not to take it easy. Put a hot washcloth on your forehead, remain standing, and breathe dry air while taking lots of histamines. You need to give your body a chance to get sick again.

Tractor Beam

Did you base the saucer shape on pop culture depictions of aliens, or was that stuff based on your ships? Does the rotational symmetry help with ... hey, where are you going?
Did you base the saucer shape on pop culture depictions of aliens, or was that stuff based on your ships? Does the rotational symmetry help with ... hey, where are you going?

Sword Pull

Merlin really shouldn't leave his dirt bike lying around.
Merlin really shouldn't leave his dirt bike lying around.