Meta chief technology officer Andrew Bosworth took to his Instagram to explain, in more technical detail, why multiple demos of Meta’s new smart-glasses technology failed at Meta Connect, the company’s developer conference, this week.

Meta on Wednesday introduced three new pairs of smart glasses, including an upgraded version of its existing Ray-Ban Meta, a new Meta Ray-Ban Display that comes with a wristband controller, and the sports-focused Oakley Meta Vanguard .

However, at different points during the event, the live technology demos failed to work.

In one, cooking content creator Jack Mancuso asked his Ray-Ban Meta glasses how to get started with a particular sauce recipe. After repeating the question, “What do I do first?” with no response, the AI skipped ahead in the recipe,

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