I really enjoy reading posts where authors talk through a mistake that they have made and what they learned from it. I find these posts to be really relatable and enjoyable to read. It's nice to hear someone teach you something from a place of humility, and when folks are talking about the lessons they've learned from their own mistakes, they often have an empathetic, approachable tone.

So, with that in mind, what's the biggest mistake you've ever made while coding?

What problems did your mistake cause? How did it happen? And, what did you learn from it?