ta87878

I disagree that there is no cutoff point for what can be meaningfully blamed on evolution. Would you say that it is an evolutionary flaw that if we drink too much alcohol we get cirrhosis of the liver and die?

I should have included this: <http://www.pnas.org/content/108/49/19546.abstract>. There is evidence that agricultural/industrial diet increases dental crownding.

The article included the line "These cusped grinders may have been useful before we learned to cook and process food." which for some reason made me think they were making the same argument.

I think the teeth/jaw issues are a matter of misuse not flawed design. The switch from hunter-gatherer diet to modern diet was too fast to blame hill-climbing evolution errors.

I'm not sure "purchase one" and "be gifted one" count as "personal use". Purchasing, in particular is (I am guessing, I am not a lawyer) commercial activity.

  You can't make a handgun with a lathe, though.

You can get pretty close with computer controlled mills that exist today, a lot closer than with the 3D printers that exist today.