[300bps]

You seem to be assuming that I am making the mistake of robotically defining the word "immutable" to some impossible level of unchanging.

I assure you I am not. I am simply pointing out the ridiculousness of someone stating that blockchains are immutable when they are changeable and have changed.

In contrast, your example of snatching up every copy of a major print newspaper for a single day has never happened and will never happen.

But blockchains have changed and once regulators and courts get involved, you'll see just how malleable they are.

[brian_cloutier]

You've been kind enough to make a testable prediction here! Let me make it a little more concrete. Currently Bitcoin block 700000 has the hash 0000000000000000000590fc0f3eba193a278534220b2b37e9849e1a770ca959, I'm very confident that 5 years from now it will have the same hash. What do you think is the chance that history will have been rewritten?