"[I]n order to investigate this... [I]f you have a Maxwell demon or something like a Szilard engine in , could you use it, as Maxwell envisaged, to use information to extract energy from De Sitter space and lift a weight or do some sort of useful work? ...[T]he answer would seem to be, only if you can create a region of the De Sitter space that is screened out from that horizon, screened out from that thermal nature. If you put a reflective barrier around the demon, you then have De Sitter space, but with the horizon screened out. ...[T]hat's a problem I'm working on now ..."