The idea is lack of a proper scientific explanation.
There’s also the fact that psionics are generally a “Human” thing, and since they don’t exist IRL, they can’t exist in game. This has a simple fix; make Psionics blob-powered, and have it use the already established 4th dimensional physics in the lore to operate. This happens to be why I thought it was originally scenario 2, but I highly doubt I’m the first to think of this.
Alright, Kevin said no psionics was a “Bright Line”. I’m assuming he meant “Fine Line”, as in “This can’t happen.”
If I thought I could get anywhere, I’d actually post my ideas on the board. I’m making a game currently, and psionics are a big part of it, so I feel I could apply some of the things I’ve done there to Cata.