This is my favourite. I love being able to video chat with my sister in NZ. As someone who grew up with big black bakelite dial phones, it seems like a miracle.
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At least they accurately predicted the term "LAN".
Or you can interpret the image: Students get brainwashed via headphone propaganda while real books are shredded.
My favourite part in that picture is that seemingly one of the students has to miss out on that knowledge since they need to operate the crank.
If they put a motor on the knowledge machine, that kid will be out of a job and his family has to move back to the country to tend the fields.
As amusing as these are, I have to assume that a lot of the time these things aren't direct predictions of the future, but instead a visual metaphor for what it might look like.
The big funnel full of books ("books go in") and hand crank ("work is done") are such that any regular joe of the time can look at it and see "ah yes, this is a machine that eats up books and zaps them into your head!"
If someone had to make a serious prediction at what such a future machine might look like, I doubt it would have looked so haphazard as that, with books funnelled in like coal.
For all I know, this illustration isn't serious at all, and could be nothing more than political satire - on the danger of technology in education - and massively exaggerated just as our current political satire is. The things of true value (the books) are chewed up like worthless fodder for the machine, while the students sit bored, all the interest of learning taken away, as they can no longer learn for themselves. Meanwhile the "teacher" sits there all pompous, getting paid for apparently doing almost nothing!
There's a lot of reasons this illustration could be the way that it is.