So I might be able to swing back to Detroit in February for a seminar/taikai, but I guess I'm thinking too much of these things and really ought to be more focused on the present, somehow. Tomorrow is the beginning of the much-vaunted algebra unit which uses a new graphical approach to all this, which of course I'm not doing much to actually put into life, or somesuch... But this is the usual post-vacation slump, though I feel no dread going into tomorrow, somehow. Time to be an expert on rulers.