Persepective: Juggling from Above. (via)
Four Laps: a Looping Video About Looping Videos, filmed as a live presentation. How it was made. (via)
A roller coaster engineer explains the types of coasters. (via)
(Yes, roller coasters are all about shifting your perspectives as well as your body—kinesthetic shifts.)
Subject quote attributed to Wernher von Braun. Originally posted at https://larryhammer.dreamwidth.org/769659.html (where it has comments). You can comment here or there.