There have been plenty of inflection points like that throughout history. Famously, Jimmy Carter installed solar heating on the roof of the white house. Reagan

There have been plenty of inflection points like that throughout history. Famously, Jimmy Carter installed solar heating on the roof of the white house. Reagan took them down shortly after. It seems like we never quite learn our lesson about energy security... https://en.wikipedia.org/wiki/Solar_power_at_the_White_House#Carter_administration https://en.wikipedia.org/wiki/Solar_power_at_the_White_House...