100 years on, quantum mechanics is redefining reality—with us at the center.

The article explores the ongoing debates among theoretical physicists regarding the nature of reality as described by quantum mechanics, particularly in light of recent interpretations and experiments. Central figures in this discourse, Carlo Rovelli and Chris Fuchs, present contrasting views: Rovelli's relational quantum mechanics posits that reality is understood through relationships between objects, while Fuchs's QBism emphasizes the subjective nature of measurement and the role of the observer in shaping outcomes. The article highlights the implications of these interpretations, particularly in relation to the famous Wigner's friend thought experiment, which illustrates the complexities of measurement and reality in quantum theory. As physicists continue to grapple with these concepts, the article suggests a growing acceptance of non-absoluteness in understanding quantum phenomena, reflecting a shift in how reality may be perceived in the context of quantum mechanics. [Extracted from the article]