No such thing as a random card/number generator

[lstephen666]

You are right in that random number generators (RNGs) are programs, so you can argue that they are not 'truly' random.

The best RNGs use outside influences such as network delays, interrupt timings etc (temperature could be used, but I've never head of this) which are closer to 'truly' random to randomize the numbers generated more.

So, the quality of generator does play a large part in how random things seem, and a poor RNG can be cracked (it has been before).

I think you'll find that that the slot machine cracked relates to one particular variety, and does not mean that all slot machines can be cracked in a similar fashion.

Of course, you can add the usual things about real shuffles not being truly random etc.