>I agree subtracting or adding one to any number is not the problem. It has to do with counting.
if you are sprint climbing and you put your hand out to grab and you add or subtract the number 1 from where your hand needs to be, it is a problem or contributes to a speed difference.
if you are sprint climbing and you put your hand out to grab and you add or subtract the number 1 from where your hand needs to be, it is a problem or contributes to a speed difference.