Can the meaning of every traditional Chinese character be read out from its face?
In logic, to prove a premise takes three steps,
1. Existential introduction --- the premise is true in one case.
2. Existential generalization --- the premise is true more than one case.
3. The universal proof --- for an arbitrary selected case, the premise is true.
I can provide a few examples below as the existential generalization for bryan_q.
a. 歪 (not straight) is 不 (not) 正 (straight) .
b. 甭 (not be used) is 不 (not) 用 (using, used).
c. 掌 (palm) is 尚 (top, upper) 手 (hand), top side of the hand.
However, if we can get one negative example, the question will be negated. Can we negate the question?