It's one of the building blocks of civilization as we know it. Without it, things might run smoothly with the exception of natural disasters and the occasional pet stain. And how boring would that be. You think I'm kidding, but I'm not. What's more, good things come out of mistakes.
Chocolate chip cookies.
The Post-It Note. The first time was an understandable error. The second time was an error that was not understandable and not acceptable. So far, in our tests, it's worked perfectly, of course. I am thankful to all the loyal readers who wrote very nice messages.