We won't attach much importance to this fact, but it is an objective fact nevertheless. What we gain is the claim that Einstein's theory is closer to the truth than Newton's theory relative to the set of questions that were actually being asked by scientists. However, it is an objective fact that Newton's theory is closer to the truth than Newton's relative to these questions. What we have learnt What we have learnt from the problem of verisimilitude is that we cannot measure the progress of science in terms of a single measure, which we call absolute verisimilitude. Rather, progress has many aspects, even if we restrict our attention to the question of progress with respect to epistemic goals.
Progress is a multifaceted property of science.
The IQ myth. It is a bit like measuring intelligence. We once held out the hope that there was a single number that would measure, called IQ, that would measure all facets of human intelligence. The hope was a high IQ score would correctly predict high math skills, high language skill, and high analytical skills simultaneously. It is an empirical fact that this aptitudes do not go together.