Back to Kant! QBism, Phenomenology, and Reality from Invariants

Abstract

As it stands, QBism faces two problems, an epistemic and a semantic one: That it is unclear how, on QBism, an agent can coherently abduce the existence of others and an external, mind-independent world, and that it is unclear how talk of that world even becomes meaningful within the QBist framework. I will here go into elements of phenomenology that could potentially help in solving these problems, but also into what I see as their limitations within 'phenomenology proper'. I will then go back to Kant, in whose writings some of these phenomenological ideas are rooted, and make a big leap forward, in suggesting a broadly 'neo-Kantian' constructivism that I believe evades both problems.