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In case the (2015) is misleading, this is newly released video from an internal-to-facebook talk he gave in 2015. Cool

It's very misleading. While it was filmed in 2015 it was published in 2020.

I don't think it's misleading, the date a talk was given can be very relevant for context.

The date of the talk is useful information, but I would assume the date on the HN title is the publish date.