The Diversity of Vertebrate Appendages

If you look at arms, legs of creatures that live on land like us, what do you got? Yeah. One bone, two bones, little bones, fingers. And same thing applies to the hindlem, you know, upper leg, mid leg, and you know, ankle bones and toes. So we see this underlying order to the diversity. But we can also see how it was assembled over evolutionary time using the right tools. That never ceases to blow my mind," he says.