Here's a link to the videos from FXQi's Setting Time Aright conference, where there are lots of talks addressing the relationships between cosmology, QM and ent

Here's a link to the videos from FXQi's Setting Time Aright conference, where there are lots of talks addressing the relationships between cosmology, QM and entropy with regards to time, with David Albert, Sean Carroll, Max Tegmark, Tim Maudlin, etc etc. https://www.youtube.com/watch?v=QR9reQrumS0&list=PL1FA30AE298BA990D&index=27 https://www.youtube.com/watch?v=QR9reQrumS0&list=PL1FA30AE29... Spolier alert: they don't really know whats going on, and they disagree pretty strongly. Decoherence seems related to the thermodynamic arrow of time: you can't un-measure something, but famously we don't know how to interpret that, many worlds blah blah.