Say hello to Mr Angry.

Everyone currently in Europe, I recommend this website. Basically, it scans all the airlines for cheap flights all over the place, and shows you a graph of when they are.

Now, look at this pic. Then look at it again from across the room.
Mr Angry and Miss Calm should change places.



A practical lesson in high and low pass spatial filters!

This one, however, stays angry from all distances: