I think substrate is too simplistic a term in the last case, but you get the drift of my question. Am wondering if itβs just inevitably intelligence/consciousness optimization all the way up.
Info density in physical systems (pre-Beckenstein bound) limits intelligence/consciousness. Overcoming would require a phase transition to a non-physical system. A separation of mind/matter. Probably qualitatively different. Still optimization. π€·ββοΈπ