V#35  From where do valid instruments come from? John Snow Cholera Study & Instrumental Variable
Channel: Zahid Asghar
Date: 10/12/2020

V#29 to V#35 are on Instrumental Variable Regression. 
Accept my appologies for poor quality sound.
Snow Cholera Discovery according to Dgootendorst(2007) and Deaton (1997) recount what appears to be the earliest application of the method of Instrumental Variable.