Humans are able to give very ...

Humans are able to give very good feedback. You can't tell with an animal what they feel.
 Hugh Herr

Quotes from the same author

In the future, every human will have a digital model of their body stored in computers. When someone needs a new shoe or a new bra or a new prosthesis or a new brace, s/he'll just fabricate it from the digital model themselves and then the device or article will be delivered to the home without even having to go to a retail store. The shoe, the bra, the brace, it'll be the person's apparel, the person's device, no one else's. It'll be exquisitely comfortable and functional. So this whole notion today where we have sizing to fit across humans is just utterly absurd.
 Hugh Herr
Humans are not disabled. A person can never be broken. Our built environment, our technologies, are broken and disabled. We the people need not accept our limitations, but can transcend disability through technological innovation.
 Hugh Herr
Finances completely determine what we can do and how quickly we can move.
 Hugh Herr