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    $\begingroup$ @BrendanDarrer please stop inserting links where the OP did not see fit to insert any. $\endgroup$ Commented Jul 12, 2022 at 13:42
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    $\begingroup$ @ZeroTheHero: Speaking in general rather than this specific case, hyperlinks might be helpful and clarifying for some readers, and improve the question. $\endgroup$
    – Qmechanic
    Commented Jul 12, 2022 at 13:55
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    $\begingroup$ @Qmechanic sure, adding links can be helpful if the links are to some relevant papers or sources but systematically editing questions by adding links to wikipedia articles is distracting. After all, the authors did not think that such links would be helpful. $\endgroup$ Commented Jul 12, 2022 at 14:18
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    $\begingroup$ One assumes you are cool and unconflicted about pions as pseudogoldstone bosons of chiral flavor symmetry? $\endgroup$ Commented Jul 12, 2022 at 15:14
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    $\begingroup$ @CosmasZachos Yes $\endgroup$
    – sb59
    Commented Jul 12, 2022 at 15:36