> Someone smart once said getting the wrong answer in time O(1) is very easy.

Reminds me of a joke about a guy at a job interview:

    "So, what kind of skills do you have?"
    "I can do mental multiplication really fast."
    "Ok, what's 102 times 376?"
    "87843"
    [enters numbers in calculator] "That wasn't even close to correct."
    "Yeah, but it was fast."