yes I am, Hello.
as usual, altitude sickness gets lots of discussion. Very interesting topic, I agree.
My own personal interest stepped up after Aconcagua in 1998 when we saw lots of AMS, several HAPEs, one HACE, and one death during a very stormy 3 weeks. We did a little medical study called "Brains and Video Games at High Altitude: Basically, by the time one got to 19,000 feet one could not operate a Gameboy playing Tetris at the highest preset speed because hypoxia slowed reflexes, concentration, attitude and other brain functions. This new finding was added to the medical catalogue of other functions that deteriorate at altitude, the first being deterioration of night color vision beginning at only 5,000 feet! Harvey