Science changes when new things are found and confirmed. The issue today is that people treat science like a religion and those people forget that the whole point of science is to question everything.seems like every new find changes, ever thing the proffeser tryed to spread as fact . i've got to agree @H.A.F.i think think the pro's( teacher or expert) are way off in the real world ,to me things just do'nt add up the right way!.