What if Harrison Wells is in fact Barry Allen from the year 2024?
If you ask me it makes a bit of sense. Harrison Wells is a character invented JUST for the show on the CW. We also know that we won't see Crisis on Infinite Earths happen on television. We also know that although the producers may have shown the article at the end of the pilot as a bit of a nod to the comics and to get fans excited, they wouldn't do something like that in the pilot without any reason or plans for the future whatsoever. Greg Berlanti placed countless Easter Eggs in the first season of Arrow and now due to the success of the show they are paying off. So maybe... just maybe... this is something like that.
After all if you ask me Harrison Wells sorta does look like an older version of Barry Allen on the show. And is it JUST A COINCIDENCE that he has a newspaper from the year 2024? The date that The Flash disappears?
I don't know about you but I can see a resemblance between the two.
After what we saw at the end of the second episode it is pretty clear Wells wants to protect Barry and wants him to become The Flash and develop into the man he is in the future. Also both Wells and Barry are a very similar height. Now I know people are going to say that Wells wears glasses and Barry doesn't but maybe Barry's eye sight just deteriorates a bit with age?