Was the mental condition/backstory really necessary, when..?
The thing is a lot of people are mentally challenged from birth. There is autism, cerebral palsy, Aspurgers syndrome, etc.
It just seems to me that it would have been better to use one of these for Chris, and have him so he had it his life, rather than the more complicated car crash causes him to become confused. I guess I just think that one of those more common impairments would have sufficed for the story, and did not see why they chose that oddly unique anterograde amnesia condition particularly.
Plus Anterograde amnesia was already used in the famous Memento(2000), already so using it here, just makes it look like too much of a cliche or ripoff. If they would have chosen another condition like Austism or Aspurgers, it would have been less cliche, since Memento is was only 7 years before it.
In Memento it also made sense since they used the short term memory as a plot device, but here, it seems that other conditions would have done to make Chris not popular with people, and that this one was oddly chosen, perhaps just cause of Memento's success.
What do you think?