Not true. If you examine sci-fi movies from the 1960s onwards, you'll learn that the most futuristic-looking interfaces have the most buttons and physical affordances. Touchscreens were never regarded as futuristic, and thus rarely depicted in sci-fi.
That could be because filmmakers didn't know about their existence. SciFi predicts a lot but also borrows from current knowledge; for example, we've seen black holes depicted in different ways according to the knowledge of the time of the writing/filming.
Also, for many years before touch screens became reality the only known direct interaction with a screen was like a light pen, whose operation was slow and clumsy (can't "push" more than a "button" at the same time, wires, etc) which could have discouraged the idea suggesting to wait until the idea of operating screens directly using hands was conceived and became popular; probably in ST TNG LCARS interface.
Not true. If you examine sci-fi movies from the 1960s onwards, you'll learn that the most futuristic-looking interfaces have the most buttons and physical affordances. Touchscreens were never regarded as futuristic, and thus rarely depicted in sci-fi.
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