A place to discuss our evolving knowledge of the nature of time and causality.   For physicists, computer scientists, neuroscientists, philosophers, and practicing engineers. Saturday 9AM PST. Resources for non-specialists includes PBS Spacetime and the online Stanford lectures by Leonard Susskind.
Be aware: These issues concerning the nature of time and causality are among the most challenging and subtle in science and mathematics, and the distinctions between various models, paradoxes, etc are complex 
Be open minded: Come from a place of curiosity, rather than defending or refuting an argument. Our culture is to discover alignment between views, rather than polarization from your cognitive biases
Be polite, be succinct : Use the stop and wait protocol (let folks finish their sentences, give them couple of seconds of silence before responding).      Finally : have fun!