The so-called grand style of common law is a new legal theory proposed by Professor Karl Llewellyn, a well-known American legal realist, to replace the legal formalism.
However, in many real world situations, the decision maker is willing or able to provide only incomplete information on parameters because of time pressure and lack of knowledge or data.
Actual problems, as they present themselves to the decision-maker, are always concerned with relative efficiencies, and no measure of absolute efficiency is needed.
I draw the trifling issue of a few billion fatalities to your attention not to make you look like a heartless fascist but because it's a reality with which you refuse to engage.
Firstly, real-life communication is much better than communication online in terms of enhancing parent-child relationship, for the former can better guarantee honesty of the communication.
On the other hand, he pointed out that while there was clearly a need to be prudent while applying research to the real world, it would also be unwise to attack it wholesale.