I'm willing look over a lot of things, but not those that could be fixed just by changing the time line. In 100 years you have four generations at the most, but somehow solar radiation ruled out all the people without a good radiation gene which would significantly lower the population and then within 3 more gens it would raise it to 3000+? How did the Lincoln memorial building go from being this great marvel building to just being the statue and two pillars? I get that they want to write cool story and sometimes you just have to accept that not everything is going to add up but these can fixed by making it 500 years rather than 100.
