Sa?o Kiselkov <skiselkov...@gmail.com> wrote:

> On 07/11/2012 10:47 AM, Joerg Schilling wrote:
> > Sa??o Kiselkov <skiselkov...@gmail.com> wrote:
> > 
> >> write in case verify finds the blocks are different). With hashes, you
> >> can leave verify off, since hashes are extremely unlikely (~10^-77) to
> >> produce collisions.
> > 
> > This is how a lottery works. the chance is low but some people still win.
> > 
> > q~A
>
> You do realize that the age of the universe is only on the order of
> around 10^18 seconds, do you? Even if you had a trillion CPUs each
> chugging along at 3.0 GHz for all this time, the number of processor
> cycles you will have executed cumulatively is only on the order 10^40,
> still 37 orders of magnitude lower than the chance for a random hash
> collision.

This is not how chance works.

Jörg

-- 
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