"Errors? Won't happen to me!"

One of my first jobs was to finish and maintain a program, that was made by a guy who had a real genius image among others. Years later, people said "oh him, that smart guy."

I never met him, but that's what i heard.

However, he was not only smart, but it seems he was also very confident. That's what i deduct from his code.

He didn't use catch-blocks. They were all empty. Not even logged.

If errors appeared , it was not possible to see what happened and where and why. The program would continue it's execution and if following steps could not work, because there had been an unnoticed exception, it would just throw another unnoticed exception and at some point, end in an undefined state.