@thomasfuchs Karl Guttag (https://kguttag.com/) has a lot of experience in the AR/VR field and understands the optical challenges exceptionally well. He's written extensively on head mounted displays for years and there's a ton of good information in general and a multi part series on the AVP itself. It's not all negative but there are huge challenges to overcome and it doesn't seem like Apple has learned enough lessons from what's already been done in the industry.