when cuda mining get's faster, maybe the amazon ec2 GPU instances finally become profitable?

please whitelist, i'm following bitcoin ever since it started & i am a programmer, so i understand enough to be let out of this sandbox

But what is gold actually good for? I mean in a medival survival kind of situation, how did they ever start thinking "wow, this shiny metal sure is worth 2 cows"...

No, i think the reasoning was always "we all agree that 1 coin equals 1 bread, 10 loafs of equal one small pig, so 10 coins equal 1 small pig" etc.