here) or that a means of time travel will be discovered in the future, like maybe in 19352 AD, and that our descendants will travel pastward to observe us? Wells projected future societies. Time travel, suspended animation and precognition were means by which his characters learned about such societies. But no one in any of those societies time travelled.
Wells' successor, Olaf Stapledon, reversed the process. His Last Men observe us, the First Men. Poul Anderson, of course, did both. Modern men time travel in "Flight to Forever" and There Will Be Time whereas representatives of future civilizations time travel for different purposes in two other novels and a series. The Time Patrol recruits in past ages.
"Fellows like H.G. Wells have always been writing about us taking a jump into the future, to have a look at our distant descendants, but of course we don't. We can't; we don't know enough. But, what about them, taking a jump into the past, to have a look at us? That's far more likely, when you come to think of it.'"
-JB Priestley, "Mr Strenberry's Tale" IN Peter Haining, Ed., Timescapes: Stories of Time Travel (London, 1997), pp. 34-43 AT p. 41.
In Elliot S. Maggin's Superman: Miracle Monday, twenty ninth century time travel technology is expensive and a research student wanting to visit the twentieth century needs financial backing.