I agree on that point, but I think deer bust you more than 1 out of 9 times on scent. Movement can certainly get you busted, but your scent can continue busting deer after you've left the area.

I know a lot of guys that pay no attention to scent and then wonder why they only see habituated does and small bucks. <smacks forehead> LOL! I know one guy that takes no scent control, drives his ATV right up to his ground blind (he's a gun hunter, doesn't bow hunt)...and then proceeds to spray about $8 worth of scent killer on his clothes, as if that is going to help at that point.

I think TurkeyGuide hit it on the head. It's about how much scent you leave in an area. The faster it accumulates, the more pressure your applying to that area even if the deer aren't sensing your movement. Movement control, scent control, noise control...they're all part of the bigger picture IMO. Let any one of them go unchecked and you start adding extra pressure on that area.