Now here's the million dollar question: Has that change decreased linearly, or exponentially? No seriously, I'm not trying to be a smart ass, does anyone know? Who's up for creating some XLS ?
there's a million dollar reward on many many mathematical problems, but i doubt there's one on this one.
http://bitcoin.sipa.be/.
obviously it's exponential, but as someone on this forum has said "every exponential is a logistic in disguise" which seems to be pretty true. hasn't been going exponential in the past 2 weeks.