On Fri, Jun 26, 2015  spudboy100 via Everything List <
everything-list@googlegroups.com> wrote:

> But surely phenomena in quantum physics and Conways Life are random, but
> computable?

Conway's Life is computable but not predictable, there is no shortcut so
the only way to know what it will do is watch the program run and see;
however Conway's Life is not random either.
​ ​
Life is computable because there is always something (the
previous generational life pattern) that if inputted into a computer
running the Life program will cause the computer to output the
next generation Life pattern. But a event is random if and only if it is a
event without a cause, so if something is computable it can not be random.
There is no law of logic that demands every event must have a cause and in
the 20th century some events in physics were discovered that had no cause,
in other words were random.

​  John K Clark​

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