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I've just read Wiki for a definition of Markov chain, it kind of lost me, but from what I understand it is about using mathamatics to try and predict the future.

if I understood right.

You can't give me tacos over the internet.

True, but we can get to know each other as individuals and learn from each other.
So physical 'tacos' may not be transferred via the internet, but the knowledge/know how on how I can get to a taco can be relayed to me via the internet!

Well that's fine. I can see all that was and all that ever will be.