how many years of colleges should be good enough for a physicists active in researches and stuffs? mostly ph.D right? but usually, when does the "real" research begin? i love physics... but im not all that smart. Do theoretical physicists scratch their brains all the time to figure out theories in their office? and could i sustain a decent life entering this field? and what happens if a physicist do not have some significant researches done? I'm worried about "what if" i couldnt come up with some theories in physics in the future when i put my whole life on it... would i be screwed pretty badly? i mean i really really REALLY like physics... so, do theoretical physicists find jobs easily? are there many demands for 'em?