[thaumasiotes]

> It would be unsurprising to have outcomes measured from zero

Assuming that you can never make anybody worse off than they were before you showed up would be a much worse abuse.

[solveit]

Or you're using a log scale because your effects span many orders of magnitude, or whatever. The specifics are not particularly central to my point beyond that it isn't too hard to wrangle up some scenario where the equation says something completely different.