[sqvirrel]

[ QUOTE ]
If every call made is correct, the player cannot be losing money, if he is not losing money the opponent cannot be taking anything from him.

[/ QUOTE ]

The player calling IS losing money. His ownership of the pot relative to his investment is reduced. So while he may be making correct calls when behind, his winnings over the long haul will be lessened because he is losing money on each new bet.