Actually, our universe is pretty much functional, because you get a whole new world every time something changes inside the current one. So you cat isn't the same it was second ago; moreover the state of your cat is non-deterministic.
Name:
Anonymous2014-08-23 12:14
>>4 Exacly! Our universe is also immutable making time-traveling impossible
Name:
Anonymous2014-08-23 12:26
>>4 If that was true, it would be possible to inspect the previous worlds.
>>7 When an immutable data structure gets updated, the previous versions of it are still available until garbage collected. That's the whole point of immutability. So if we get a new world every time something changes, then where are the previous worlds?