“Drawing a hand that looks like a hand remains hard—first surprisingly so, then stubbornly,” he writes. He adds, “most people are bad at what they haven’t spent years learning to do . . .

"The goal from the beginning has been to create a prosthetic hand that we model based on the human hand's physical and sensing capabilities—a more natural prosthetic that functions and feels like a ...

The manual pressures of stone tool behaviors and their implications for the evolution of the human hand. Journal of Human Evolution, 2018; 119: 14 DOI: 10.1016/j.jhevol.2018.02.008 ...