Oh so your big defence is "THEY SAID SO". Well done!<quoted text>
Sorry, but a theory in science is consider fact, science 101. Basic.
Epic fail on your part.
BIO101 has not long replaced its biology books that spoke to the robust empirical evidence of mankinds knuckle walking ancestry.
I might remind you, the same fossils that supported mankinds knuckle walking ancestry, now support mankinds non knuckle walking ancestry to an upright ape. A minority of researchers still disagree. Isn't that just dandy!