No one said to set PS at zero but it is clearly a variable out of our control. If we turn a profit, great, if not, well...we should still have industry leading pay after these negotiations. Why (and how) do we have to place value on a variable? It should be a disbursement over and above to compensate and motivate for windfalls.

This is a cyclic industry with huge variables. Oil, weather, IT meltdowns, stupid management decisions...any and all of which can affect the profit margin. Hopefully we had our one and only "Black Swan" event on 9/11 but I still believe in the business cycle and it isn't always going to be upward. Not sure when it comes down but it will correct itself. It always does.