I don't really care how it works, and the mechanism by which it's generated. My thorough understanding of the mechanism behind the bitcoins has nothing to do with this case.
You stated, in absolute terms, that bitcoins "will run out next year". Regardless of how difficult or unfeasible it becomes to mine, the rate of release of new bitcoins into the economy remains relatively fixed, so that statement was completely and utterly wrong.
The amount of hashing power on the network has little-to-no impact on the rate of generation of new bitcoins, over the long term, as the system self-regulates and adjusts to keep the average rate of block release at 10 minutes. So your analogy about excavators and shovels is pointless and asinine to your statement that bitcoins will "run out next year", as one has nothing to do with the other. If you'd made the argument that BFL's pathetic rate of production and shipping will likely render almost all their new products useless due to difficulty increases, that would've made sense.
