[itsnotvalid]

They even got the helicopter and humvee right (sort of).

The people in 1900s have over-estimated the usage of robotic arms. We don't have that kind of arms working on human yet, but we do have them on automotive manufacturing.

[JoeAltmaier]

Yes, they were in the age of mechanization and the easy prediction was "everything will be mechanized"

[itsnotvalid]

The projector thing is really a very accurate prediction. Since there is no such concept at that simply a light bulb could produce a clear imaging of some remote users, without using any prerecorded films.

[georgecmu]

They even got the helicopter and humvee right (sort of).

The French started experimenting with helicopters in 1906, so it's not that surprising.

The people in 1900s have over-estimated the usage of robotic arms. We don't have that kind of arms working on human yet, but we do have them on automotive manufacturing.

We don't have robotic arms in consumer products yet (I believe this will change in the next 10 years), but they are pervasive in the manufacturing industry in general, not just in the automotive manufacturing.

[jodrellblank]

We don't have robotic arms in consumer products yet (I believe this will change in the next 10 years)

Why do you believe that?

The best use I've come up with for them is for disabled people - a *plegic with a robot arm on a desk able to manipulate post, or on wheels able to be an avatar in the real world.

But that's the sort of profitable insurance-funded medical use which still isn't around. Currently they only exist in consumer space in the arm-for-amputees sense, and in the Lego Technics sense, and I expect that to continue, but where else would they start appearing for consumer products?