There are different types of observers. Casual observers differ from scientific observer. Seeing and observing are two different things. Not that everybody seeing is actually observing the thing.
A casual observer just sits back and watch for something to happen while a scientific observer comes up with some hypothesis to work on it.
C I think, I apologize if I’m wrong
Still need help sun is a light sorse
It doesn't stand for anything, but it's a Latin term that means "instantly" or "immediately". It's directive to medical personnel in a emergency situation
