As for the flaws in the film, in fact, this is also a flaw in time travel. It often expresses and explains many problems clearly, so it will seem illogical, but I think, is it still science fiction that conforms to our current logical thinking? Science fiction is originally a product of fantasy. What we can do is to minimize the loopholes or hide them deeper.
The two most impressive shots are at the end of the finale. One is: the picture is composed of the present and the future where Alexander lives. His friend (seems to be Phoebe?) said "his home" and Alexander said "my home". Phoebe really understands his friend, he's happy that his friend has found where he belongs, and I think that's true friendship. Also I want to say, Alexander's old butler is so cute, (*^__^*) hehe... And another shot is: Phoebe throws away his hat because his friend once told him about hats The problem, maybe he didn't understand before, but now he understands. This reminds me of one of Arthur Clarke's three laws: if a brilliant young scientist says something is possible, he is probably right; but if he says something is not Possibly, then he might be very wrong.
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