> Why are we not aiming higher? We've been aiming higher explicitly for at 70+ years (https://en.wikipedia.org/wiki/Artificial_heart https://en.wikipedia.org/w

> Why are we not aiming higher? We've been aiming higher explicitly for at 70+ years (https://en.wikipedia.org/wiki/Artificial_heart https://en.wikipedia.org/wiki/Artificial_heart). I've been following it for 50. Artificial hearts were 5 years away since at least 1972 or so when I first learned about this field. The problems (mechanical, surgical, electrical, biological) are endless and it's an astoundingly hostile environment for machinery. We have enough problems getting pacemakers to work without severe problems.