Why ask why? :
Gelman, Andrew
Why ask why? : Forward causal inference and reverse causal questions / Andrew Gelman and Guido Imbens - Cambridge NBER 2013 - 9p - NBER Working Paper ; 19614 .
NBERWP 19614
E10767.pdf
Why ask why? : Forward causal inference and reverse causal questions / Andrew Gelman and Guido Imbens - Cambridge NBER 2013 - 9p - NBER Working Paper ; 19614 .
NBERWP 19614
E10767.pdf