Dream
Dream is defined as a process which takes place in a mind which can effect the reality. It is well defined in the movie.
Nobody knows, that's not the most important thing. Nolan said the whole point of that ending was to demonstrate that Cobb did not care about dream or reality. He just wanted to see his kids again. It's supposed to be really emotional.
INCEPTION
The totem is a device that Cobb spins in order to tell whether he's in a dream or not. If it spins perpetually, he's in someone's dream. If it spins, but then falls and stops, it's reality.
An antonym for the word "inception" is "conclusion" or "ending."
inception
i personally think that is was not a dream, because you could hear the dradle start to wobble and they just couldn't end his life as a dream! But there are ways it could have been a dream, but the movie is just meant to not be figured out!
Of course not. The film Inception is science fiction fantasy. It is not based on reality or on any existing technology.
Reality Dream was created in 2008-11.
It's a cliffhanger; no-one knows
This question is not entirely clear. Persons do not "get stuck" in dreams, because dreams end when the dreamer awakens. The idea that one can "get stuck" might have come from science fiction such as "Inception." Such ideas are not based in reality.
No, the art of inception is a fictional concept. No one can get into anyone else's dreams - not even those who make claims about "dream walking." Dream invasion is a fantasy of science fiction.