An answer to a morale problem.

Rating: 9/10 (1 October 2019)

The movie evokes a fundamental ethic question which is: Should we be able to change reality, our past, our feelings and parts of our conscience? The answer given here is that deep feelings like love cannot be erased, or any part of conscience itself. We should not try and change our past or destroy memories. We see in this film how Joel hurts himself and that at some point during the procedure he regrets making this choice. Even in the end when it's all "erased", Joel and Clementine end up finding each other and falling in love in a very odd and unusual way. We could say that they both "tricked the system" while being in Joel's brain. And that's why they ended up finding each other. But Howard's case with Mary is confirming once again that love cannot be erased from a person's soul; Mary has an odd crush on her boss after she suffered the same program.
It is also possible and logical to believe the movie is saying love can be pure, and once that kind of love is found it is eternal. Because in Joel's conscience we find out that not only he made a wrong choice that he regrets, but that Clementine doesn't want him to forget her too. They both regret it. Joel dives in his conscience while being "asleep" and there he understands he truly loves Clementine, and she does too. At the very end of the movie, when they both understand and see what each has done to himself and the other, the two lovers end up laughing. In the final shot, we see them playing together on the snowy cost of Montauq; they end up being together, no matter all that happened.
So this film says that love, or any feeling is not erasable, or maybe that real love exists and that it's there, in a person's absolute pure conscience and it's there forever.