It's not documented, but unfortunately neither of these re-signs the commits even if GPG signing is configured. They are based on `git replay`, and that doesn't sign either (at least yet).
I don't have a concrete example, but I think you can invent plenty of iterated prisoner's dilemmas with whatever modified rules and variables and find 'tit-for-tat' isn't the end-all-be-all. Like it changes things if there's an infinite or an unknown number of rounds, some of the defects are 'noise', etc.,.
You don't seem to get the point. That is only universal in current day English. In e.g. Finnish: miljoona = 1e6, miljardi = 1e9, biljoona = 1e12, triljoona = 1e18.