MICROSOFT WEBSITE "HOW-OLD.NET" KNOWS HOW OLD YOU ARE

You're at a bar, chatting to someone comely.
You fancy that you can surprise them. You ask: "Guess how old I am."
The comely one knows that you wouldn't be asking this unless you believe you look younger than you are.

Microsoft isn't that comely one. It has no such qualms about telling you the grim truth buried in your gnarly face.
It has emitted a site called How-old.net. This claims to be able to guess precisely how old you are from a picture.

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