I met Luke while he was working on Edyn (pre-YC). He was really interesting, and clearly enjoys hacking and tinkering with hardware and physical things more than anything. It's not surprising to me that he'd get bored after a working process for supporting hardware startups was established. Interested to see what he's doing around housing, and somewhat hopeful it won't just be tiny homes (since while I think they're cool, living in one isn't for everyone).