Great thread, thanks for resurrecting it! I love Groundhog Day - my favourite movies (and books) are always those that appear light and fun on the surface, but are actually quite profound.
I always thought the main factor in his redemption was that he helped those people even though, as far as he knew, his actions would have no lasting effects and he would have to do them all again the next day. He might get the thanks and respect of all the people that he later saw at the ball, but by the next day they would be strangers to him again. He had nothing personally to gain from helping them, but he did it anyway.
What would have stopped him from being a serial killer? Well, as someone else asked, what’s happening may have led to him to start believing in some higher power. He would have had better reason than most to believe that hell exists. Or perhaps he tried hurting people and found it gave him no pleasure (except for punching Ned Ryerson out, that certainly gave the viewers pleasure!) He ended up being rather saintly; perhaps it wasn’t in his nature to be a murderer.
I disagree about Phil possibly ending up as some musical genius or even having encyclopaedic knowledge no matter how much time he had. Seems to me that, even with infinite time, there are limits to what the human brain can learn. Like someone else said, he couldn’t take notes. It all had to go in his own fallible brain. Haven’t you ever noticed how when you learn new things, some of the old things you knew become harder to remember?
Plus there’s the time factor. For him, years did pass, and over time we forget things. I used to be able to speak Slovak but only remember a few words now. Phil had a lot of time to forget things as well as remember them.
The ‘doctor’ comments could have been an honorary title, or he pretended to be a doctor, or perhaps before groundhog day he really did have a doctorate in a non-medical field. He obviously cannot have used Groundhog Day to go to medical school, unless there are med schools in small town USA that let you enrol and graduate on the same day.
One last thought … after all this time of having to pretend that was his first lesson ever (for example), he must have ended up a really skillful liar. His sense of what is ‘real’ must have become totally distorted. For him it is just as true to say that the boy fell out of the tree as to say that boy did not fall out of the tree.
Now this really is the last thought. His conversation with the drunks in the bar, in which he says something like ‘do you ever feel like you’re just repeating the same day over and over’ and they they know exactly what he’s talking about, despite not actually living in a time-loop, indicates that Phil’s experiences are applicable to more than just his special case. We could all use our own finite time to help others and learn new things.
Well, that was what I took away from the movie anyway…