> the purpose of a UI is human-device interaction That's not the purpose of a film ui though. Its purpose is a lot closer to that of a prop: it can convey info

> the purpose of a UI is human-device interaction That's not the purpose of a film ui though. Its purpose is a lot closer to that of a prop: it can convey information about the plot (ACCESS DENIED), be part of character development (fluid mastery of a complex tool), convey setting & tone (metal and cracked glass screen implies something different than flowing holograms). The thing it is not for is an actual person to use as a tool to solve a problem in real space. It's not inherently a worse prop because it can't be used that way. Just as a prop gun that can't fire is a shitty gun, but a better prop for that very reason. Filmmakers should study real use of UIs so they understand how better to use that prop to convey their meaning to the audience. But they shouldn't pursue verisimilitude for its own sake. A prop gun that the audience can tell wouldn't be able to fire conveys a very different meaning to one that looks ready to go. Filmmakers should be able to ensure they're conveying the information they think they are, but the rest is artistic choice.