Re: "hats solve the problem presented by AR glasses"
> "I was thinking top hat. A nice stovepipe hat can actually act as a chimney. Put a few louvres in the side, and keep the heat generating electronics at the very top - and you can have a nice through-draft to keep both head and gizmos cool."
The top hat idea might work in areas that are normally cool, but in desert places outdoors in the summer, e.g. Arizona, the environmental heat would probably fry the electronics.