

Writing one full novel would provide enough energy to run a laptop for a total of about 15 seconds. With a lot of rewrites, you might expend several kilojoules-but you'd need to rewrite every word 10 times to match the energy stored in a single AA battery. If you write straight through without editing, you'd expend about a kilojoule. It turns out not to make a big difference which kind of writer you are. Some people write straight through without pausing, while others rewrite every sentence endlessly.

The amount of backspacing and rewriting varies wildly from person to person. so typing it out would require at least that many keypresses.
#XKCD SIMPLE WRITER SERIES#
Now that we know how much energy a keypress takes, we need to figure out how many keypresses are involved in writing a novel.Ī typical novel might have half a million to a million characters in it, Letters, I mean, although I can think of a book series which comes close on the other kind. It's also enough to lift a squirrel 300 microns-all the way from the ground to the top of a stack of four sheets of paper! How much is 1.5 millijoules? Well, it's enough to heat a drop of water by 1% of a degree. Using data from a study of rubber-dome keyboards-the most common type these days-we can estimate that the energy required to press a key is around 1.5 millijoules for a letter key and 2.5 for a big key like the enter key or spacebar. In the case of keyboards, there's a lot of engineering research into the force required to press keys, in part because so many people suffer from repetitive strain injuries. On the other hand, some clever ideas for collecting waste-like recovering the energy from doors opening or cars braking-turn out to be totally practical. Cool-sounding ideas like the recent " Solar Freaking Roadways" campaign don't always work out when you run the numbers. Avoiding waste is a great goal, but sometimes it's hard to judge how much energy is actually moving around in a particular system. People like figuring out places where we can recover "wasted" energy.

#XKCD SIMPLE WRITER GENERATOR#
You probably shouldn't invest in a keyboard-based generator any time soon. Preorder here! ◀︎ ▶︎ Keyboard PowerĪs a writer, I'm wondering what would be the cumulative energy of the hundreds of thousands of keystrokes required to write a novel. Currently this click functionality only works with a mouse.What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions comes out 9/13.
