On 12 Apr, 07:24, Rob Beezer <goo...@beezer.cotse.net> wrote:

<SNIP>

>  Maintaining version x.y.z of the
> necessary software is a very interesting idea, though I'd guess maybe
> at some point the lifetime of hardware might end up being a limiting
> factor?

If you think about computer games, there is now a project which
emulates nearly all old computer systems and virtually any old game
can be made to run on it regardless of what games machine it was
written for!! People realise the importance of preserving the past. In
20 years time we'll be emulating the computers of today on our
hardware. So it may be easy to run old versions of Sage.

I say let the future take care of itself in that regard. All we need
to think about is preserving the data. Sage is so perfect for this
sort of thing, as it already includes old versions of major open
source mathematical systems. One version of Sage automatically gives
you version x.y.z of a whole lot of systems.

Bill.



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