On the answers of people.

Anyone on this site
How does one make one plus one be not equal to two? This is the question that have been stinging the back of my mind since some guy mentioned to me as a yardstick of "cleverness".
What exactly is the "cleverness", I don't really know. Being able to wash my own clothes is "clever" and so is being able to brush my teeth. But I digress.
The point is, how do you make "one plus one into three? "(or not, but still...) Contemporary knowledge of mathematic tells us nothing about this. In fact, most people don't know how. There is a answer to this though, one that I have heard from my friend, who is obviously clever, is that one male and one female creates a child, thus the answer become three. But then again, three what? Physics tell me neutrons and protons can create a pion and return it back within a period of time. Is it the same "theory" as this? Maybe yes, maybe no. The thing is, it all depends on us. The child might die, and the total people would still be two; the pion is returned and the total number is still two. So,most of the time, it all boils down to what we believe and choose. For example, my answer is x. Why, you ask? Because I let x be the answer of the question above.
Another question is, take a bottle. Fill it half with water. Is it half full, or half empty. Say half full and people will think:" Optimistic"; say half empty and the answer is "Pessimistic". Huh? How is our answer deterministic to our personalities? Freud would be proud. Following my previous answer, I normally don't choose what is supposed to be the answer. It simply is not any use to follow their rules. I could let x again, but nah, originality is the form of humans. I say, it is full with water and (perhaps) air.