I watched NOVA Science Now yesterday and they described what that two-word puzzle is whenever I do a search here and elsewhere or when you create a new user account on various web sites. I thought it was interesting. Suppose there are limitations to what a neural network could do although I remain optimistic.

Here's a link to what reCAPTCHA is:

What is reCAPTCHA?

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"I am beset by the ironies in my life"

I agree, this is pretty interesting. I never really thought these things were annoying though.