Interesting links

I’ve found these interesting, in one way or another:

  1. Is the eurozone a casino? The current betting strategy is madness.
  2. Do what I say, not what I do.
  3. xkcd’s really on a roll at the moment — one for mathematicians.
  4. One for your Christmas list. It would be so cool!
  5. You should choose your Christmas cards carefully if you’ve got any astronomer friends.