Harshman writes as if dark matter/energy is settled/proven science when
it is nothing more than an ad hoc, unscientific addition to prevent the
collapse of the modern cosmological model.
It is an ad hoc addition which proposes the existence of an entity (dark
matter) comprising 95% of the mass of the universe but has never been
observed and its only proposed feature is to explain the velocity of the
outer edge of galaxies which can't be explained by the current model. In
like fashion dark energy is unobservable with its only feature being to
explain expansion which the current model ended up failing to explain.
And yet proposing unobservables which are untestable and hence
unfalsifiable isn't science. But this isn't about science; its about the
religion of naturalism.