In The Original Series in the 60s, people had no idea what the future would look like or what technology would look like. In one of the early episodes, they had a paper print out machine on the bridge that looked like a fax machine, which was considered futuristic in the 1960s.
Like the example of the Enterprise fax machine, what technology or system do you think are we displaying in the current Star Trek shows that will show how dated we will become in the future?
Direct-fire ship-to-ship weapons. Modern war is more and more about missiles, drones, etc. I think in the future the idea of ships coming near each-other and shooting directly will seem really old-fashioned, even if they are using space lasers.