A tournament poker spin on cash game bet sizing

[italianstang]

How do you know if a specific tournament player has won his way in to a large buy-in tournament? Or is used to playing much smaller tournaments?

How do you tell how far in to a session someone is in a live game? Especially with rebuying and such?

I agree that those are excellent concepts to be watching out for but how do you put players in the right categories? Especially in tourneys where obviously there is a lot of random shuffling around of players and its tough to track who is who in the large fields.