OK, so what ever the reward is makes no difference to the amount/value of the effort. The fact a ghorn (insert reward you want) is a possible reward for a certain activity means doing that activity is a fair effort for receiving it. How about thinking of it this way: the actual reward is random (luck) but you earn the opportunity so once you receive the reward it is earned. I get your point about shooting a dreg not being effort but you've got to count all the dregs you shot that got you nothing. Also I think my analogy is still better than the walking down the street and picking up money - like you know if you're walking down a street you might find something good or being told if you walk down a particular street you'll get given coins - as I said before, just cos you don't know the reward doesn't mean the effort/time is suddenly less.