Joints let off smoke when burned which wastes weed. THC supposedly condensates in water, wasting weed using a bong. I'm not sure there is any argument that a pipe wastes weed (unless you let the weed burn while not smoking).

Personally, I think the similar but more important question is if you have a gram of weed and you use all those different smoking methods which one gets you the highest.

Whatever method you use blaze on:stoned: