Originally posted by Galan007
Yes. This is stated in the RoS VD:
https://i.imgur.com/pnt0ioN.jpg
Yep.
Also, the Doppleganger ability and Luke's projection technique were both called "Similfuturus" in the ancient days(see the excerpt I posted above.) So yeah, the former undoubtedly inspired the latter.
Difference is, Luke literally has to pour his own living force into the cosmic force to manifest the projection, which is...unique to say the least. So with that in mind, I agree that it reads like an amalgamation of the Doppleganger and force spirit techniques.
And given that Luke's projection already had 'solid' elements to it(he gripped Leia's hands, 3PO's optic sensors registered him actually being there, his cape/hair were flapping in the wind, and Kylo...who can very accurately sense presences in the force and apprenticed under Luke for YEARS...didn't realize that it wasn't actually Luke standing in front of him), I absolutely think his projection could have interacted with the physical world around it, much like his force ghost in RoS... IF Luke would have chosen to do so, of course. /shrug
Originally posted by StiltmanFTW
https://tinyurl.com/uzeqccu
I'm not familiar with the doppleganger ability. I'm guessing it's more of a pure illusion and doesn't require living force to create?
And on that point; considering the projection ability requires Luke to use his own living force, doesn't that basically make it a death sentence anyway?