With a rate 1/2 you can’t expect to correct more than 5.5% of errors.

Actually I wrote smartwatch but I meant GPS watch. I recently bought a Garmin and there’s no wireless charging for it.

I wish smartwatches were included too so that I could travel with just one charger and one cable. I guess waterproofing a USB-C port is not that easy though (for the ratings those watches usually have).

If I understand correctly, tit-for-tat is the best strategy so far. But it is only based on a competition and some simulation. I wonder if we will ever find and prove an optimal strategy.