The past 100 years of development are unfathomable already - even though some sci-fi from 100 years ago was accurate, so there was some imagination of what things could be like already. I like to believe I can vaguely predict what the next 100 years will bring, but that's based in a cynicism that the big scientific discoveries have been done already.
But 1000 or more years, unfathomable. It's the one reason where I wish time travel or suspended animation was real, just so I can see what the future might bring. Assuming it meanders on as it has for the past few thousand years, and there's no Great Filter event.
I was surprised to learn that octopus fossils exist that predate dinosaurs. I dropped all hope for their eventual world domination. If they haven't done it by now...
I don’t think our species will make it that long. We will have scienced our way to some sort of singularity or be extinct by several hundred thousand years.
But 1000 or more years, unfathomable. It's the one reason where I wish time travel or suspended animation was real, just so I can see what the future might bring. Assuming it meanders on as it has for the past few thousand years, and there's no Great Filter event.