Zuckerberg's online actually quite slick @30 WPM. Brand concerns aside, its a good tech leap forward for this fidelity of communication using gestures(and costs will fall as apple, google, 3rd party get into this). You have to realize that there are only smart glasses in the market which are 1/2 way between smart and AR/VR and at the moment none have any AR/VR that are commercially at this price point or massively available like Orion. I still think the puck will make its usecase be more specialized and will be a hindrance to massive adoption, but things will get smaller and they have separated the power hungry screen made it way less power hungry as an interface goes and they will go after puck's size next.

I have been reading the book called Apple in China and hardware is so hard. 30 hours of battery with wireless communication (I wonder if this is BLE 6.0 alone) between the EMG + Wave guide tech is not easy.

This is the second long term bet by meta that is panning out, the first being investing in long horizon AI projects(pytorch and a bunch of AI models), though that org has had rough times it did yield something good.

It’s six hours battery, not thirty:

with up to six hours of mixed-use battery life and up to 30 hours of battery life total thanks to the portable (and collapsible!) charging case

I would also say several other less known software and data breakthroughs are probably going to also help this tech

1. A world wide localization map that can let the glasses SLAM system do useful things.

2. I believe the Puck runs on a custom OS. The glasses are probably on somekind of a real time Microcontroller driven thing(would be surprised if its much more than firmware, code wise) that needs to efficiently package sensor data and send it over BLE to the puck/wristband. I am not sure they have open sourced those two components.

I hope they open source both of those for public good.