On 12/04/2013 15:58, TvT wrote:
> why change a perfectly running system?

How do you know if runs perfectly?
For instance, in the context of digital signatures: some people are 
still signing using SHA-1 and 1024-bit RSA-keys.
And why stop smoking? People were smoking 50 years ago, why would we 
assume it's bad for our health? Because recent research has provided 
proof that some things we assumed to be perfect aren't perfect at all.

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