Speaking of stairs and escalators, England really needs to catch up on this one. When I was riding the train there I kept having little old ladies ask me to carry their luggage for them up the stairs. I can't imagine what wheelchaired people do.
They have to plan their journeys around accessible stations, just like in the US. Incidentally, the "Stand on the right" notices all over escalators on the underground are supposed to (and generally do) achieve exactly the the effect that you describe. Oh, and you should probably have offered to help the old ladies before you were asked
Kudos to egg.
Also, how are you computing the total number of Achievements? If you add up my achievements (and if I add the powers of two I get closer) but it doesn't come out to be the number you posted.
Rounding errors, gets them every time...
Base 4 works for me. Anyone else?
More problematic would be an achievement for having achieved nothing. That's when Bertrand Russell would come knocking.
Recursion is the root of computation since it trades description for time.