C5 W3 quiz problem

Can someone explain?

\alpha^{<t, t'>} serves to select values of a^{<t'>} to determine the output y^{<t>} not y^{<t'>}, as per the given feedback.

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@reinoudbosch, thanks for pointing that out - I overlooked the difference of one superscript ‘t’ at the end of the sentence.

Easy to miss. It may be an idea to add ‘Not y^{<t'>}’ to the explanation so that the difference between y^{<t>} and y^{<t'>} becomes emphasized in the explanation. Let me mark this for @Mubsi for a future revision.

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I think the Feedback provided for that quiz question isn’t really helpful - it’s simply a 99% restatement of the text in the question.