re: Poker & Two same hands at the same time on two different poker rooms multi-tabling?
Humans are great at picking out patterns. There are hundreds of thousands of "oh that's neat" things that can grab out attention. The millions of bits of information that we sift through get discarded and we don't think much about them.
So yeah, you'll get the same to cards on occasion. It's going to happen a lot more often than you getting the exact same cards two hands in a row at the same table because there is hand overlap when you multi-table. That is, you get 7h/9c on one table, then Ks/4s on the other table, then discard the 7h/9c and pick up Ks/4s. SAME HAND ALERT! But the Ks/4s was compared to two hands.
And of course, you multiply the effect when you multi-table.
There is no chance that multiple sites are using the same random number utilities to give you the same hand at the same time. Even if they had the same equipment, different numbers are fed in (some based on player activity) to get the output. Heck, even if the same numbers were fed in similar machines at the exact same time they'd have different outputs. And the outputs are used for thousands of players on each site, so even if the results were the same, the odds
of your seat (out of the thousands on the site) being hit with that output are greater than the odds of just getting dealt the same hand at random.