Share this postThis Used to Be “Hidden Knowledge”mathewaldred.substack.comCopy linkFacebookEmailNoteOtherThis Used to Be “Hidden Knowledge”Now It Is Celebrated Openly on the StreetsMathew AldredJul 20, 2022∙ Paid11Share this postThis Used to Be “Hidden Knowledge”mathewaldred.substack.comCopy linkFacebookEmailNoteOtherShareThis post is for paid subscribersAlready a paid subscriber? Sign in