I don't often like cinematic riddles, but this one deserves putting the effort to try and solve it. Especially since the movie itself gives us all the necessary clues for the solution.
The more I thought about this film the better I realized it was. It asks two basic questions what's our memories made of? And, how do we build new ones if we lost all those we had?
Yes, it's funny at moments, but I don't think it's a comedy and I said more than once on this pages "comedy drama" or "tragic comedy" are non terms as far as I'm concerned. Life have their funny moments, and showing these funny moments doesn't mean we're telling a funny story. In fact most of the laughs in this movie come from the artificial attempt to create new memories for these people who lost their old memories so they can build a new personality. It's like constructing a personality in a laboratory - that's not the way to do it. Personality is what carries us through real life and that's the only place where personalities can be built.
The film says this very loudly with a story that allows us very limited information about its protagonist. Aris, the protagonist seems to suffer from the amnesia sickness that the story tells us, is taking place all over the world. But we'll soon realize Aris does remember certain things, but doesn't like remembering. We'll have to reach the very end of the movie to solve its riddle and pay close attention to the clues provided through the story to find why Aris stopped fearing apples which are - as the film says - "good for the memory"
I won't be saying anything more, as this would mean adding a spoiler - I don't do these.