Of course it is a scientific fact and is not to be called a theory.
Look at the ape-human hominid skeletons and fossils at the Natural History Museum - these in my view totally vindicate Darwin's The Ascent of Man, in which he stated and explained the striking similarities between ape and human.
Put simply, we are all descended from apes and therefore share a common origin, thus making racist arguments about "superior" and "inferior" races completely invalid.
Phil Brand
London SW17