I think the only thing I'll add here is that "It depends". As a general rule I agree with the advice for loading Osprey packs, but the one I have has a zippered bottom. Because of this I will often put a tarp and my tent at the bottom of the pack so I can access them quickly. I keep my food and kitchen near the center of the pack and snacks/lunch in the outer pockets. I keep my clothes near the top and my rain jacket on the top. My FAK goes in the hood with maps, compass, and assorted other little items.

It is tricky keeping it nicely loaded though. OM is right about the food issue. That always changes everything and to be honest I haven't really taken the time to figure out a method to deal with that. As a result, by the end of a trip my pack is loaded pretty willy nilly and often not very well and I tend to carry it around all day like that anyway, which is really a bad habit I've acquired.