What We Do Not Know

Years ago, at an sf con, there was Fran, me and another guy. The other guy thought that the light speed limit was frustrating: so many things that we can see from a distance but cannot explore close up. I was not so sure. At any stage of transportation technology, we will be able to see further than we can travel. That is part of the deal. We are at least in the universe and can surely travel at least to the limits of the Solar System and improve telescopes to see much further than we can now. Other galaxies remain as mysterious to Poul Anderson's Technic Historians as they are to us. A few of his characters go further but they cannot see everything.

Fran said that there are so many things that we do not know, that maybe among the things that we do not know is a way to travel faster than light. Not if the light speed limit really is a fundamental physical feature of this universe. Science is always provisional. The vastness of the unknown is a reason to continue learning, not to hope for a particular outcome. Whatever we learn will be unexpected. We will return this point from another direction later.