#  My talk at Columbia University 

 





November 28, 2013

 

 

   ![ecec_internal_other_10-16-2103.jpg](/sites/g/files/omnuum3566/files/styles/hwp_1_1__960x960_scale/public/kristenghodsee/files/ecec_internal_other_10-16-2103.jpg?itok=ZcHEfeMl) 

 



 

 

 



 

 

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