Paul Krugman recently published in his NY Times column a skeptical opinion piece on Bitcoin:
https://nyti.ms/2NYYSdw
About 90 years ago, an Anglican priest enumerated 7 social sins (
https://en.wikipedia.org/wiki/Seven_Social_Sins):
1. Wealth without work.
2. Pleasure without conscience.
3. Knowledge without character.
4. Commerce without morality.
5. Science without humanity.
6. Religion without sacrifice.
7, Politics without principle.