Earlier quoted context omitted.
If your first word is four greens it's actually pretty good: you get to know four letters to avoid with just one undo!
Sure, but if you count undo as a partial game over (which is heavily implied), it's better to just be able to see what the word is and move on.
Not at all. Contrary to other games where undos are cheating, here they are part of the game. Without them it would be 80% luck and only 20% strategy.
> which is heavily implied
I can't find anything that implies this. It explicitly says:
> This uses undos deliberately rather than only as an emergency
while avoiding undos is mentioned at the end as "The Purist approach", which I read as slightly mocking.
I see it like a chess problem where you have to find the best sequence of moves, so you start off with an intial move, then backtrack, explore another idea, etc. Not like a chess match where of course you cannot undo any move.