settecba, thinking of commitment helps us to get away from situations where we have the odds to call a really tight range when we're certainly behind by folding on an earlier street

when we REALIZE that calling the flop commits us to call a turn shove, we're no longer getting 2-to-1 with 40% equity against his range, we're laying our stack to win the other guy's stack plus the pot right now which might make us fold now even though we have the "pot odds" to call according to pokerstove