I’ve seen this chart before, but completely forgot where it was from. Tried to find it a couple of times in a hurry of a conversation, but couldn’t. Thanks to this SysAdvent blog post, I now have it permanently engraved into the archives of my blog.
xkcd figured out how long can you work on making a routine task more efficient before you’re spending more time than you save. The crossing of how much time you shave off and how often you do the task gets progressively less obvious when move from the top left corner of this char to the bottom right corner.