deletions | additions       diff --git a/layout.md b/layout.md  index 30641c2..c6510c0 100644  --- a/layout.md  +++ b/layout.md 
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Does_the_apple_fall_far__.md  Lecture_4_Guest_lecture_by__.md  Oil_crisis_and_financial_meltdown__.md  No_Man_is_an_Island__.tex No_Man_is_an_Island__.md