"A senior developer is intimately familiar with their own failure. They have written code both under, and over designed, and have seen both fail." I have been d

"A senior developer is intimately familiar with their own failure. They have written code both under, and over designed, and have seen both fail." I have been developing software full time for 30 years now and this is so true. In fact, it's a well researched bias: https://en.wikipedia.org/wiki/Overconfidence_effect https://en.wikipedia.org/wiki/Overconfidence_effect Even in these comments you see new-ish developers supremely confident this is not true because they think know. That said, there is a place for this delusion, sometimes, due to luck and/or really hard work some team pulls of something the old guy says is going to be hard and that's a great thing.