Re: Most plausible Psionic powers?
 

It gives an idea of how much work is needed to backlog the ability into a given setting if it is desired.

Re: Most plausible Psionic powers?
 

Why?

I know that there are some settings where this makes sense, but it appears to me to be in direct contradiction to the OP's question. Could you enlighten me how it isn't, please?

Re: Most plausible Psionic powers?
 

There are two measures of 'realistic'

The first is 'which violates observed physics least'

The second is 'which is in greatest conflict with observation so far'

The difference is the degree of surety you place on known physics. Seeing the future, for example, is one of those things that violates observed physics the most while violating human observation the least.

Re: Most plausible Psionic powers?
 

Which impossibility is more impossible than another impossibility sounds impossibly subjective.
We need some parameters to confine the question into a workable format.

For a modern setting, you all but need a global Illuminati level conspiracy hiding all evidence of a not insignificant aspect of basic reality.

I suppose one could go with internal spooky powers versus external macroscopic abilities.

Re: Most plausible Psionic powers?
 

What does that even mean though? Either something violates physics or it doesn't. The only differences are in our ability to understand the how. As in creating matter out of thin air is obviously impossible even to children, while getting why teleportation is as well requires a bit more education.

Re: Most plausible Psionic powers?
 

I was more replying to an unproductive post about how psi is impossible. I was merely stating that a certain level of the suspension if disbelief is required for an RPG that uses psychic abilities, much the same as one that uses fireballs, Orcs, or FTL drives.

Re: Most plausible Psionic powers?
 

The difference is in how highly we rate our ability to understand the how. Or rather, how sure we are of the extrapolations we call science. And yes, I freely confess that from a scientific view, the list that uses science as its primary measuring stick does a lot better.

But if you ask from the point of view where you ask what could be happening without science noticing, you get a different list. This list is most likely based on 'hardest to prove', and 'most subtle and believable' rather than 'most in harmony with predictions of science'.

Re: Most plausible Psionic powers?
 

God of the gaps is no less silly for magic as it is for literal gods. It requires the supernatural to not only have physics breaking powers, but that they are insanely effective at hiding it all.

Your theme seems to still fall down to what seems kind of possible to average adults rather than children. Adding new forces seems more possible than creating matter out of thin air, but it isn't really.
Which is why I think a good parameter is education/knowledge required to define powers as impossible rather than merely unproven.

Re: Most plausible Psionic powers?
 

I suppose more information is do.

This is for a setting where a hyper advanced (like TL13) interstellar civilization in the far far far future broke down do to a cataclysmic event. Now for this setting I'd like to present some Psi abilities that are present in people do to radical biological engineering that's occurred in the thousands of years this civilization was in it's Golden Age. So I guess in the end I'm looking for psi powers that are just impossible for humans to do for biological reasons like lacking the "hardware" so to speak. Not powers that the action of usage regardless of who or what the subject is are impossible do to physics based reasons.

Re: Most plausible Psionic powers?
 

I don't think science should be the primary measuring stick. I think "what the readers will take" should be. Or perhaps "what is plausible in-setting."