Errata and Stuff

Errata: The wife called the ranger to report our creepy experience.  The ranger said that that another ranger had come out to check on us and that the flashlight in the middle of the night was most definitely someone checking in on us.  

Stuff: I'm getting all geared up to do some grading for the linear algebra class I'm TA'ing.  There are few things worse than trying to follow haphazard matrix manipulations.   I'm listening to Thunderstruck by AC/DC, it's getting me all pumped up for several hours of tedium.