His comment was fine, if uninformed.
Do you mean because that's not what you're talking about? Because you can easily get an opening book to carry you out fifty moves, and if you've only got seven pieces left on the board, then there you go.
So I assume you mean *all* positions. Mapping out chess so you can get from starting position to the end via any route?
50 moves is 100 ply from the starting position. Please feel free to give as a sampling of all these "easily gotten" opening books...or tell you what, you start analyzing on Stockfish on your PC from the opening position, and post back here when you get to 100 ply...
in fact either you have problem understanding or kidding with me .do you remember? i also mentioned size of letters .ringing any bells smaller the size lesser amount this shouldnt be that hard to understand.
What's sad is that even your attempts to retreat are absurd. Why not just say that your "pages" are infinite planes, if you are going to pretend you fully understood how inaccurate your "exaggerated" example was?
I doubt you are a teacher, but if you are...let's all have a moment of silence for your students.