Those kinda guys are idiots. They should know that if they can't control the weight thru the entire range of motion, then they have no business lifting the weight. I can understand tryin to squeeze out those last few reps and I recognize the value of partials, but when all there doin is partials and there so weak that they cannot lower the weight back down in the negative phase of the lift and to add insult to injury drop there weights on the floor like jackasses. Then they need to be schooled.