Ran into an old professor/teacher of mine (from Luleå), here at the airport. Small world. Did some random small talk with him about things happening at that university now, and about what we have been up to since last time we ran into each others (could it have been last year when I was in Luleå visiting some people?). I wonder, is this a common thing, or just a Luleå/LTU one? This that you somehow get to know your professors/teachers to such level that you randomly talk to them when you see them off-campus, years after your last course with them?