I wonder, in the middle ages for example, did an illiterate farmworker feel as in the dark when trying to read a hymn book in church or an extract from the bible, as I do when trying to understand what is going on here ?

There is a fine line between genius and madness. You appear to be skipping along this line with a grin on your face! It's wonderful. Was the line :- if (p.y nh) p.dy = -Math.abs(vx) * .1; supposed to be :- if (p.y nh) p.dy = -Math.abs(vy) * .1; ('VY' where it had been 'VX') or do you just pr...

mean clouds evaporation occurred fourth states