2231: Automatic computation of navigational affordances

New channel CogSci: Interdisciplinary Study of the Mind: title sample judged 'pick' (Mostly genuine conference talks, keynotes, and paper presentations that teach cognitive science research, but mixed with); passed a second screen for sellers/exam-prep/re-uploads; 3 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.