the villain was in the sb so he could have any starting range. if he flopped some sort of wrap draw, wouldnt you want to check the turn and let him get a free card? being oop, he will have to guess if we made a boat on the turn, or are giving up a bluff. i think the only river cards we are afraid of are 2 remaining 4s or 3 of the remaining 10s. if we fear villain having 10-4, 10-7, or a random 4, then his outs are actually decreased. Doesnt possibility of a non-scare card hitting the river plus the chance that the next card fills so many draws which still lose to 7s full makes a good argu