Hard hitting anonymous questions in the first week of an undergrad causal inference class: 'Is it just a coincidence that bells are shaped like the normal density curve? Is there some relation between the curve and sound?'

This is how you know it's time to get out of MIT!!!

This is really a physics question, equivalent to: is the common shape of bells optimal in some sense? It has little to do with causal inference (CI). CI is about conducting an experiment (or using data from natural exps.) with X=x and finding out to what extent Y is **caused** by X=x