I wouldn't exclude Lua, it's a simple language whose basics you can learn pretty quickly if you know JavaScript or comparable languages. I therefore would recommend Neovim.
Yes, and from what I understand there was plenty of discussion and they carefully analyzed different options. The discussion seems to be is closed now.
I respect that, you cannot ponder these things forever and sometimes any decision is better than none. It's just that, unfortunately, my priorities are different from those of the Helix devs in that respect.
The experiment seems flawed because they might think the experimenter knows the right choice and tries to lead them to the wrong answer. If you're only interested in studying regret, I wouldn't let the experimenter know the right cup.
Right, it would be simpler to just say “I flip a coin and keep it in my hand, and you guess heads or tails, but before I open my hand I ask if you want to change your answer.”
It’s the exact same probability but with less extraneous factors that can confuse people. It also makes it plainly obvious that switching makes no difference to your likelihood, and takes away any interpretation of “why” people don’t switch in the first experiment: because it doesn’t make any difference so what’s the point?