In 1817 if you spoke of a thing called "radio" you would have been thought to be crazy.
In 1917 we had radio, but if you were to talk of television, you'd get the "you're crazy" reaction.
I can remember in the '50s seeing a news headline blaring that we had bounced radar off the moon. Twenty years later we were landing on it.
Technology can advance in leaps and bounds, so who knows when we will come up with something that will take us to the stars within a meaningful time frame?
I have a relative that worked at both Los Alamos and Sandia Labs.
He knew I was into this kind of stuff, but was appropriately tight lipped about it. He would go on about declassified things like the Atomic Airplane project he once worked on, but not a peep about classified projects.
We got into a discussion about Tesla’s stuff that was obviously making him uncomfortable. When I persisted he said..
“You’re into science fiction, right? Think about where you “think” we are, add 100 years, and you’re just getting close.”
IMO, The major communications technology advances with the greatest impact on humanity are as follows:
Telegraph>telephone>wireless radio>television>internet.
Where does it go from there?