ABCD

Now that Amazon is advertising one-hour delivery of bottled water, [[A diagram showing the most obvious progression of events. First just one bottle is sent from the warehouse to a person. Then two. Then five. Then 20. Finally, a direct pipe sends the water along.]] I vote we start calling municipal plumbing "on-demand hyperloop-style water delivery" and see if we can sell anyone on the idea. {{Title text: When I was a kid, I asked my parents why our houses didn't have toothpaste pipes in addition to water ones. I'm strangely pleased to see Amazon thinking the same way.}}