Cory Doctorow writes about sci fi:
SF films and TV are great fonts of futurismic imagery: R2D2 is a fully conscious AI, can hack the firewall of the Death Star, and is equipped with a range of holographic projectors and antipersonnel devices — but no one has installed a $15 sound card and some text-to-speech software on him, so he has to whistle like Harpo Marx. Or take the Starship Enterprise, with a transporter capable of constituting matter from digitally stored plans, and radios that can breach the speed of light.
The non-futurismic version of NCC-1701 would be the size of a softball (or whatever the minimum size for a warp drive, transporter, and subspace radio would be). It would zip around the galaxy at FTL speeds under remote control. When it reached an interesting planet, it would beam a stored copy of a landing party onto the surface, and when their mission was over, it would beam them back into storage, annihilating their physical selves until they reached the next stopping point. If a member of the landing party were eaten by a green-skinned interspatial hippie or giant toga-wearing galactic tyrant, that member would be recovered from backup by the transporter beam. Hell, the entire landing party could consist of multiple copies of the most effective crewmember onboard: no redshirts, just a half-dozen instances of Kirk operating in clonal harmony.