Who says "most" algorithms aren't inherently parallel? How do you even enumerate that set? What counts as an "algorithm" anyway? Parallel processing is the norm

Who says "most" algorithms aren't inherently parallel? How do you even enumerate that set? What counts as an "algorithm" anyway? Parallel processing is the norm in biology. And even if we grant that most of the algorithms humans have devised to run on our von Neumann machines are sequential - doesn't that say more about us, than about some intrinsic property of algorithms?