Albert Einstein said common sense is the collection of prejudices acquired by the age of 18. It is also a result of some pervasive and extremely stupid logical fallacies that have become embedded in the human brain over generations, for one reason or another. These malfunctioning thoughts--several of which you've had already today--are a major cause of everything that's wrong with the world.

5 The Historian's Fallacy

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You'll Hear it As:

"Hey I heard Lisa tried to stab you! You should have known that ho was crazy!"

How It Screws Us:

Remember that time you decided to jump off your roof and do a back flip into your little brother's kiddie pool? Remember how all your friends thought it was a great idea and it was going to be so cool? And do you remember when you regained consciousness three months later in the hospital, how suddenly they all laughed at you and said you should have known better? Congratulations, you were bitch-slapped by the Historian's Fallacy.

The problem is, there is something about our brains that just won't let us put ourselves in the other guy's shoes. We're the fat guy on the couch screaming about how LeBron James "choked" because he took that bad shot instead of driving the lane. We're all convinced that, had we been in the same situation, we would have made the right decision; the Titanic wouldn't have sank, the stock market wouldn't have crashed and the PlayStation 3 wouldn't have been priced at $599.

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The moment we see their mistake in hindsight, we tell ourselves what morons they must have been. The problem, of course, is that when your reaction is to shake your head, laugh and call them dumbasses, it keeps you from learning from their mistakes.

It Gets Worse...

To see this happening on a grand scale, just open a history book, or watch the news. George Santayana famously warned in 1905 that, "those who cannot remember the past are condemned to repeat it" and people have spent the last hundred years ignoring him. It's not so much that we don't remember the past, it's that here in the future everything they did looks retarded.

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What were they thinking?

People don't realize that given the exact same set of circumstances and foreknowledge as Hitler in 1941, we would have invaded Russia, too. If we had been Sylvester Stallone in 1985, we would also have made Over The Top and married Brigitte Nielsen.