Why do we need five fingers? To begin with, it's worth answering the question "why five fingers?" as our genes are involved. Since we belong to a vertebrate lineage that evolved from aquatic animals that once emerged on the Earth's surface, they all had five-toed limbs. Crudely speaking, from fins to arms🙌🏻 Meanwhile, purely anatomically and physiologically - a five-toed limb has no special advantages over a limb with another number of fingers (for example, four or six). It is just a result of coincidence, we could have even 8 fingers😁