Mistakes, we all make em. The ones that are the most irksome are the ones I was sooo sure about at the time.
Like some people who thought electing A George _W Bush 3 times must be a good idea despite the Iraq wars and Banking Corruption each and every time.

I was sooo sure that selling my Apple stock was a good idea at 130.
Well its now at 186 despite the recent crash.

I was so sure that my website would not be deleted by a faceless corporation since I was paying them good money.

I was so sure that my neighbors would share my opinion of a corrupt managed health care system and the hypocrisy of the religious right.

I was so sure that "all" Mudcat contributors are a well meaning highly reasoned group of left leaning folksingers.

I was almost postitive that Bill O and Rush would have succumbed to mob violence.

I really thought that GM would keep making more electric cars instead of continually losing more money than other car makers combined.

I really thought that the cool Sodium light bulb that makes 99% sunlight would beat out the poisonous mercury flouresent bulb.

I'm betting that if a poll were done asking if you thought you were more intelliegent than most people, 95% would say yes.

There are no solutions, answers or options to these failures in correct decision making
.
It is said however that no one ever went broke betting that people are far more stupid than we think. I guess that includes me too.