> “A related point that I plan to discuss in more detail in Part 3 is that there have been near-eye “glasses” for TVs (such as Sony Glasstron) and computer use

> “A related point that I plan to discuss in more detail in Part 3 is that there have been near-eye “glasses” for TVs (such as Sony Glasstron) and computer use for the last ~30 years. Yet, I have never seen one used on an airplane, train, or office in all these years. It is not that the displays didn’t work or were too expensive for an air traveler (who will spend $350 on noise-canceling earphones) and had a sufficient resolution for at least watching movies. But 100% of people decide to use a much smaller (effective) image; there must be a reason” It could be social conformance. Nobody wants to be the first person to do something conspicuously different in a constrained setting like an airplane. I remember when I got my first mobile phone sometime in the 1990s. It felt embarrassing to answer it in the middle of the street and carry a private conversation right there. Today there are essentially no boundaries to where you can use a phone. Apple can easily afford to spend billions on ad campaigns and influencer marketing to make headset use behavior look acceptable and get over the social conformance threshold. No guarantees that they can pull it off, but they have the resources to try. The external EyeSight display on the unit seems to be a big part of this.