I sort of think of the absolute value of lines changed as a pulse. You can do -100. You can do 100. You can net zero from 100 adds and 100 subtracts (abs=200).

I sort of think of the absolute value of lines changed as a pulse. You can do -100. You can do 100. You can net zero from 100 adds and 100 subtracts (abs=200). But it’s something. If you have long stretches of zero that’s not good.