I believe it comes from the word 'miss-take' as in you've taken something wrong.
A mistake is called a mistake when the action itself was completely unintentional, not the outcome.
agerbil isn't actually a hamster but, a close "cousin". but, some people mistake hamsters for gerbils sometimes and call them that.
blunder
transgression.
This is called a typo
uhhh....your face
I wouldn't call her stand against racism a mistake.
We say call him. Why was it a mistake? Follow your heart, not the internet. peace out
It depends on the date, denomination and what you call a mistake, post new question.
A bundle of sticks
The most common human mistake is answering a question without actually knowing the answer. Also know as being too lazy to actually research the answer, or just being stupid. Stupidity is human kind's biggest mistake.
Electing Obama
It's called a mistake.