The Einstein-Cartan theory is, to my mind, a completely straightforward generalization of General Relativity, and indeed seems like a necessary generalization if we are to accommodate particles with intrinsic spin. (The mathematics for this claim is beyond me, but the layman's summary is this: General Relativity assumes a symmetric stress-energy tensor, while a nonzero spin density would lead to an asymmetric stress-energy tensor. Einstein-Cartan is the (unique?) generalization of General Relativity that allows a nonsymmetric stress-energy tensor.) But according to this Wikipedia article, Einstein-Cartan avoids singularities in black holes and solves the black hole information paradox through proposing that the lost information is found in a "baby universe" spawned by the black hole. https://en.wikipedia.org/wiki/Black_hole_information_paradox The connection between Einstein-Cartan and "baby universes" is completely mysterious to me. Is there a relatively non-technical explanation for that connection?