Is it possible to have a nine-pound backpack for a weekend trip into the mountains? There's actually such a packing list, but I have to say I'm skeptical. Sleeping bag, half of a tent, pack, stove, freeze-dried food, ultralight cook pot and bowl, a change of clothes, a rain jacket (you never go into the mountains in the PNW without rain gear), a fly rod and reel, and a dSLR camera. That should about do it. I know that nine pounds is impossible. But I know my recently sprained ankle will thank me for having the lightest pack possible.
I'll try for fifteen pounds.