The Dark Cloud, the Black Cloud, Is Relational Quarner Mechanics

Theory of 'relational quant mechanics' suggests that objects don't contain on their own properties, but are just dependent on pairs. But is this something we can actually one day put to the test? How would we know what i think exactly? I the same way in which we finally all agreed that the earth is not o the universe - even if there is no experiment they tell us so. Becauses no way to measure thewat centrfer centl unis.