The muscles in the thumb are much stronger, anyway. Which is her modest way of pointing out that she can hold her body weight with just her thumb muscles while inserting a rope-holding device into cracked granite, a feat of strength that is undeniably extreme. Filming on the rock face was serene despite the presence of camera operators dangling from slings and hanging from helicopters. At times, I climbed above my protection. But I was comfortable with that.
Panic just wastes energy.