pourquoi "aient"

Question

We are told "penser" takes the indicative for positive and takes the subjunctive for the negative.  Why use the subjunctive, "aient", for "pensez vous que ces legendes aient"  Why not "ont"?

Accepted Answer

Using penser in a question with inversion -  "pensez-vous" - also requires the subjunctive. It’s not in this lesson, but is referenced about halfway down the discussion:
 https://french.kwiziq.com/revision/grammar/when-expressing-opinions-with-penser-trouver-savoir-croire-pretendre-que-use-the-subjonctif-with-negative-opinions

Answer

Carl, you could also check the link Laura Lawless subjunctivisor for further discussion. https://www.lawlessfrench.com/subjunctivisor/penser/