That's not much of a clarification: Star Trek also has aliens, semi-realistic cybernetics, etc.
Originally Posted by Digital Arcanist
I gather the intent is to prevent deus-ex-machina technology, e.g. "Oh, we just transport out of harm's way", "We disintegrate the enemy instantly", "By rerouting the DPS conduit through the holodeck and the transporter we create an army of solid holograms," etc.
I actually played in a Champions campaign that ended not with a bang but with a whimper. The GM tended to throw in ideas from anywhere simply because they sounded cool. Between two game sessions, two of the cleverer players figured out that using a previously introduced ultimate force field ("bobbles", does that ring a bell?), they could effectively prevent all travel between dimensions. Since the major enemies of the campaign were extra-dimensional, that effectively ended the campaign.
"On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question."
- Charles Babbage (1791 - 1871)