For example for Gold backed money, experiment shows it has been rejected long time ago yet, like Newton Theory was rejected after Einstein revolution.
That is probably more true than you expected.
Newton's theory is not rejected. Newtonian physics explains perfectly well what can be observed above an atomic scale, such as things we interact with every day as well as planetary orbits.
Einstein added another level of depth or precision to physics, taking us down to atomic units and predicted what was not possible to observe with the human eye. It did not invalidate Newton.
I'm sorry it's not what you beleive.
Relativity Theory is about structure of Time Space at very LARGE scale, and not at all about atomics, which revolution (who invalidated Newton too) is
Quantic Physics.
Both invalidate Newton Theory. But Newton Theory is still acceptable theory between certain frontiers as a correct predictive theory, but fail in many aspects like
Mercure Perihely problem as one of the most know historically (but also about what is space, time, don't predict Big Bang, Black Holes, Time change with speed, constant light speed for all observers etc. etc...).