Nudging Theory? I am sure you can “Google out” the essence of it. But here is my favorite citation from Wikipedia:
It has been remarked that nudging is also a euphemism for psychological manipulation as practiced in social engineering.
I can not agree more.
Authors themselves acknowledge it by formalizing the root of the theory as “Choice Architecture“.
Simplified: manipulating by architecting the choices (aka options). In order to convince the target audience, for the required option to be the chosen one.
Think Brexit campaign.
I would like to believe Mr Thaler has not envisaged applications of his theory would go this far.