:}\nPeople change over time based on nutrition even environment. The theory of evolution depends on a concept called “survival of the fittest”. That theory works as far as our gene pool will allow it to. There are millions of possible combinations within our gene pool; at any given time those genes which best allow individuals to survive and prosper will emerge.\nBut that is change within our genetic structure not evolution.\nThe reason men do not evolve is that we cannot create new DNA or new and different genes and they do not occur by chance.