deletions | additions       diff --git a/Lecture_7_Externalities_this_is__.md b/Lecture_7_Externalities_this_is__.md  index e4d124b..ce39cc4 100644  --- a/Lecture_7_Externalities_this_is__.md  +++ b/Lecture_7_Externalities_this_is__.md 
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WHAT DO WE WANT? Consumer surplus! WHEN DO WE WANT IT? Spread optimally over the course of our lifetime(s)!  What Why  are the animals that have the right to exist typically either furry or big? Does it have anything to do with fuzzy logic?
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