>>149211217
>It mainly comes down to that whole perception thing it feels like
The Narrator explains the reason he refused to mention the Princess's nature as a perception-based entity despite how it could've been used to make her weaker was due to the ability of intrusive thoughts to ruin everything, which he elaborates on here:
>The Long Quiet: "What do you mean a single intrusive thought could have instantly ended the world?"
>The Narrator: "It's simple, really: 'She can become whatever people perceive her to be? That's easy! I'll just will her into something really small! But wait, what if I accidentally will her into something that ends the world. Oh no, what if just by thinking that—' But you wouldn't have finished your hypothetical thought because she would have already destroyed the world. Luckily for you, as you are now, you won't be able to will her into anything. You don't work the way a living being does. Not anymore."
The Q&A with Narrator-sama actually has a lot of really useful information about The Shifting Mound and how she's able to be changed, how The Long Quiet is able to destroy her, etc, though most players don't get to see all of it due to the limited amount of questions you get to ask so you can see the full Q&A dialogue here
https://slay-the-princess.fandom.com/wiki/The_Spaces_Between#The_Shifting_Mound