Talked to my dad today.

Talked to my dad today. It seems PET scans are kind of a pain. For 3 days, you're extremely restricted on what you can eat and you aren't allowed to move unless you absolutely have to. Aside from that, he sounded ok (he says he's pretty tired, though) and we talked about 3D printing, designing and machining engine parts, fusion, lasers, graphene resonance, biomedical engineering, humans as an obsolete social animal, Kurt Vonnegut, Chopin, Baroque music, economics (I admit he lost me there), entropy, thermodynamics, and some other stuff. This is pretty typical of the conversations we have. Had he been born several decades later, he would officially have been a geek.