When a player begins playing poker they usually just see their own hand and the board. The player that starts to learn the game and make some moves will see his own hand, the board, and he will start to try to put his opponent on a hand. The next stage is where a player sees his own hand, his opponent's hand, and what his opponent thinks he has. The final stage is where the poker pro is and that is where he sees his own hand, his opponent’s hand, what his opponent thinks he has plus if his opponent is capable of deception.
The poker professional has learned to read hands and make decisions
very quickly. He will already have analyzed position, bet sizes and
be asking questions like why did the player bet or not bet, how an
opponent will react if he raises, etc? For many poker players they
simply don’t have enough time to properly analyze all of the
information and make a good decision. That is not as much of a problem
for the poker pro. The professional poker player takes all the pieces
of information he has and puts it together quickly. It is similar
to putting together a puzzle. Sometimes the poker pro is wrong in
putting everything together but more often than not he is right and
that is why he is a good hand reader and a poker pro.