Sharing because I found this very interesting.
The Four Thieves Vinegar Collective has a DIY design for a home lab you can set up to reproduce expensive medication for dirt cheap, producing medication like that used to cure Hepatitis C, along with software they developed that can be used to create chemical compounds out of common household materials.
By this the parent commenter means “car crashes,” by the way. Car dependent zoning is literally mass-murdering more children than school shooters ever did and we’re doing almost nothing to fix it.