I agree to a degree. POS is a wiser option to POW. In addition I read there is a New project being created in Silicon Valley(California USA) entitled 'CHIA'. Yeah, like the 'pet plant' "Cha-Cha-Cha-Chia Plant" I dont care for the name either but supposedly they have created a New alternative Called 'Proof of Concept'. According to this article 'which I read online btw, So It has to be true'. Anyways, check it out for yourself, expected to be released mid 2019...