You know you live in California at sea level when you're packing to go to Reno, with a shuttle coming in ten minutes, and it just occurrs to you that you should probably pack, like, actual shoes and socks. To wear in Reno. In November. Instead of the sandals you've been wearing when you go outside since, like, February.
Just a thought. [facepalm]
PS -- socks, where the heck are my socks...?!