OP "Within #relationalism, the term ‘observer’ covers any and every type of physical system. That means that such cross-perspective links would be created every time any two systems interact" This is the main lobby of #complexity science. 💭 #Nonlinearity changes the superposition principle.
When one distinguishes 'constructed' and 'real' one zsually means 'made up' and 'given' but it's actually 'only resistant to the constitutive methods of its measurement' and 'only not resistant outside an observer's life-works'.
Or in someone else's words: the social construction of what?
#constructivism is just #relationalism