Increasing the supply of medicine and vaccines to a preindustrial society will cause living standards to fall

I did not realize that. From Karl Smith's Fourteen Non-Obvious Points From Economics.

Photo link here.

UPDATE:  Jim Manzi contests, writing:

What about Europe from before to after the Industrial Revolution? The supply of medicine and vaccines was increased, and living standards subsequently rose enormously. Same problem again: The rule simply assumes “cause,” and this precludes falsification.