Even Einstein’s theories are being repudiated, as I understand it, and many people here were alive during his career. What will we know 100 years from now?
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?