> any effects and forces we have yet missed would have to be so small or inconsequential as to be meaningless This is a level of unwarranted confidence far exc

> any effects and forces we have yet missed would have to be so small or inconsequential as to be meaningless This is a level of unwarranted confidence far exceeding my own, in my opinion :) Uranus is 2.66 light-hours from the sun. At 0.01% light-speed, that's about 3 years. 3 years is a long time to travel, especially in the modern age, but not a long time to be alive, even for a human today. Is it possible we dramatically extend our lifespans or achieve technological immortality in the future? I certainly think so. Can we reach 0.01c traveling between Earth and Uranus? Maybe not, because we have to accelerate half way and decelerate the second half. But I would feel much sillier saying that sub-decade interplanetary travel is absolutely impossible than saying that it's possible. Than saying we'll unlock new materials and techniques that make it possible eventually. I'm not even saying to expect them within a century. Think about millennia of uninterrupted technological advancement driven by superhuman AI - you're saying with certainty that it's not possible we'll figure out how to travel within our own solar system on human timespans after all that time? It'll be a boring future if we're already hitting the absolute limits of space travel and we've just started. > Science isn't magic. No, magic is just science we haven't figure out yet.