Well, once the economy collapses under an orgy of global governance failures, and the power grid goes down for good, the global supply chains disintegrate and Western civilization is but a distant memory (or no memory at all), I'm thinking technological advancements in a hundred years will maybe be on the level of rediscovering how to fashion bronze tools.
I think your comment addresses the real problems facing us. And it may be on the optimistic side, i.e., there may be no humans to work on bronze tools.