
note In addition, a number of these early alt texts have pieces of the image file name attached, which seems to indicate that they were auto-generated somehow He's since gone back and added them to every single image, but these after-the-fact versions are only short descriptions of the image rather than jokes (although some of them are still funny). However, around the time that "Tie Vote" was published, the author started adding xkcd-style jokes and comments to the alt text.

Randall mentions that although there's no point in this, since water from Europa is chemically the same as water in Earth, the plan could work with the right marketing.

If the top half is vacuum, not much would happen other than a loud sound caused by air rushing in into the vacuum. There are three glasses, the original water and air one, and two with vacuum and water. The result would be similar to a thermonuclear bomb exploding. The ball, moving at 90% the speed of light, would never even reach the batter, because the ball will undergo nuclear fusion with the air molecules in the atmosphere. The Air Not There: Averted the presence of air is accounted for when imagining how each scenario would turn out." several star- struck sages spiral southward" 20% More Awesome: The first image of "Great Tree, Great Axe", where all the seas in the world are gathered into one.This blog provides examples of the following tropes: Think of it as textual MythBusters with hypothetical scenarios. Not to be confused with the trope What If? or What If?, a Marvel series speculating on changes to the Marvel universe.

The book received a follow up, What If 2, in 2022. He's also published a book, What If?: Serious Scientific Answers to Absurd Hypothetical Questions, containing several of the more popular answers and some new ones. Randall has a Twitter feed,, of numbers he comes up with while writing the blog. Updated erratically * Originally it was Tuesdays, but it gradually shifted to "when I feel like it" starting about 2016., he answers off-the-wall reader questions using math, science, and xkcd-style cartoons. What If? is a blog by Randall Munroe, the creator of the Stick-Figure Comic xkcd, started 10 July 2012.
