Let's say you had one of these 500 Ghash miners, and you could time travel back to January 2009, when the difficulty stayed at 1 almost the entire year.
And let's say you put this miner to work, pimping out the hashes like a mutha.
Now here's the math part: since BTC is limited to a 4X difficulty increase with each adjustment, would it be more profitable to:
1. let the thing hash non stop and let the difficulty rise over a few adjustments to its equilibrium point,... OR...
2. once the difficulty rises, shut off the big miner for a few weeks and let difficulty drop back to 1, then turn it on and run it up again?
I think letting it run non stop, even with higher difficulty after the first few adjustments would be more profitable.
Math it out!
Do you have a time machine handy?
You'll have to convince me first, LOL
http://www.youtube.com/watch?v=SR5BfQ4rEqQ