deletions | additions       diff --git a/Lecture_4_Guest_lecture_by__.md b/Lecture_4_Guest_lecture_by__.md  index 3a0f867..1ac2edb 100644  --- a/Lecture_4_Guest_lecture_by__.md  +++ b/Lecture_4_Guest_lecture_by__.md 
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Guilds -. trade societies -> mutual benefit societies ->     Common Law 1662 about "freedom" from poverty