When are you pot comitted?

[jjhooksjj]

I understand the basic point of the post, but poker is all about the long run. There are many instances when calling is correct, even though you suspect that you're probably beat. If you fold every time you think you're beat, you'll allow players to run over you, and take big pots off you. You won't call on the end even though you've put so much in the pot. Many times a call is profitable even though you'll only win the pot one in every four times. It's good to have the best of it and know it, but equally important is protecting your bets.