After a decade of work and an approximate expenditure approaching $100 billion, Meta Platforms has introduced three new lines of smart glasses—including its most advanced AI glasses to date. Meta’s new $800 Ray-Ran Display was the headline-grabber from the company’s Connect event, owing mostly to a new wristband device for subtle gesture-based interaction—an innovation CEO Mark Zuckerberg heralded as a huge scientific breakthrough. However, the most significant part is video playback support, with Meta’s new Ray-Ban Display glasses allowing users to privately view multimedia messages from WhatsApp, Messenger, Instagram, and smartphone, hands-free. The built-in full color display is just as impressive, on paper at least (early demos have been shaky). It offers a resolution of 600×600 pixels over a 20-degree…