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Welcome to Tech News Briefing. It's Friday, October 13th.

I'm Zoe Thomas for the Wall Street Journal.

There are a lot of things we still don't know about how the brain works.

Artificial intelligence could help us understand more.

And possibly even detect diseases like Alzheimer's decades before symptoms occur.

Some promising AI tech might even be able to do it by peering into your eye.

Our reporter, Vipal Manga, will join us to talk about these developments

and how researchers are working to turn them into reality.

But first, since Hamas attacked Israel last Saturday,

misidentified video footage, fabricated information, and violent content

have been appearing on social media.

It's turning out to be a big test for platforms' content moderation policies.

And so far, Elon Musk owned X, formerly Twitter, appears to be stumbling.

...