yeah...
i've only ever heard that weird and wonderful theory once before - from my grade 9 RE teacher at a non-denominational christian school i was sent to (resulting in me being rather atheistic in outlook).
Apparently there was no rain prior to the flood, nor rainbows, due to specious reasoning as you describe so well above (which leads to why god's promise in the form of a rainbow to do his crazy act again was such a big deal).
Apparently the plants got their watering by the general 100% humidity resulting from this mass of water floating overhead. WTF! Again, WTF! ps. this same man made the rather eloquent argument that catholics aren't christian but rather idolators - i guess that's not so much a strange belief, just an example of christian intolerance
( Tiffany Aching 's bowl of oatmeal tried to stare her down and won, Sat 21 Mar 2009, 9:10, Reply)