I love these little deep dives into bits of UX that we take for granted. Admittedly I think extending the idea of a Molly Guard to a "Are you sure" prompt is a bit of stretch, but it's a cute story either way.
This is the extension of a previous post, Molly Guard in reverse which introduces the molly guard with:
…the little plastic safety cover you have to move out of the way before you press some button of significance.
Anecdotally, this is named after Molly, an engineer’s daughter who was invited to a datacenter and promptly pressed a big red button, as one would.
Then she did it again later the same day.
Love it.
But what's more to love about this particular post, is that Marcin found the actual Molly with her dad!
Source: unsung.aresluna.org