costs and revenues don't happen in a vaccuum, thats what your missing. they are relative prices, and only make sense in the context of a menu of choice (or:none

costs and revenues don't happen in a vaccuum, thats what your missing. they are relative prices, and only make sense in the context of a menu of choice (or:none). a stone wheel is brilliant technology, just like the bronze or iron age weapon was way back in history. but today its only useful (or not) in the context of current alternatives.