The man from earth —— emotion change based on story develop

This film impressed me deeply. It is a science fiction film. However, in one moment, I think I believe it. And after watch the movie, I still think about it for few days. Though this is not a film with high investment, the story or the idea impressed me. At the same time, I think director use the plot to show how character's emotion changing perfectly.  

The story is about a man who live on this planet for 14000 years ago. He never dead, and he is 35 years old forever. He studied many language and forgot them when new languages appeared. Every ten years or so, when people started to notice that he doesn't age, he moved on. He think he is a Con-magnon. He never told this to others before, but this time he told it to some professors who worked with him in Hafer.

These professor can not believe him of course. Then, they asked many professional question. He answered all of them.

The  painting looks like a Van Gogh's work. He said that is. At that time, he is a farmer, he always draw picture with Van Gogh. And he told others he had studied with Buddha. Buddha is a special people that makes him very fascinated. Buddha thought he is different but never asked him like he knows everything has reason. Then, he went to the mediterranean sea area, and he think he can follow the lead of Buddha, so he create christianity. Yes, he is Jesus...

Many things happened on this man. Something he can remember, something he can't. How ever that may be, professors can not find the flaw of his talk. They think it is a joke at the beginning. Then, they start to thinking. In the end, they had to believe it even if they don't want to.

In this film, directing skills is limited. Without specially good effect, grandiose scenes,  famous stars, special shot technology. There are not voice-over, subtitle and poetic dialog to present character's emotion. But we still can see emotion changing in the film clearly. Why?

I believe the secret is the story. Very different and gifted idea of story. Every few minutes, director will gives audiences some surprises. Live 14000 years, we surprised, character emotion also change to surprise. Painting with Van Gogh, talk with Copernicus, think with Newton, study follow Buddha...One by one, a lot of unfamiliar ideas come up, that makes character's emotion changed.

To conclusion, I consider that good idea(story or plot) also can help director present character's emotion change in the movie. I will try to do it if it's possible in the future.