There certainly are poorly done regression analyses out there and yes, things like coding-errors and correlations of variables can screw things up. But the point of regression (at least in the natural&#x2F;medical sciences) isn&#x27;t to give a definitive answer but to suggest actual experiments to be done. I think it isn&#x27;t coincidence that both your link and the original link are from social scientists. There it is much harder (and often impossible) to conduct followup experimental studies based on the regression and so the regression often ends up as the end result.