> I cite it because we're barely scratching the surface of our own world, which is one of a potentially infinite number of worlds that is encapsulated by the wo

> I cite it because we're barely scratching the surface of our own world, which is one of a potentially infinite number of worlds that is encapsulated by the word "everything." I think maybe I was assuming the parent was referring specifically to physics discoveries while you were assuming that they were asking more broadly about how many years until we've discovered everything discoverable? Unless you are actually arguing there's likely lots of physics discoveries to be made because humans have only photographed a fraction of trees on the earth, or mapped a fraction of the seafloor, or sequenced only a fraction of the genomes of known species?