I agree with you. The graph is too sharp to be just technology: technology was gradually developed over years - from "nearly useless" to "automate everything".

I agree with you. The graph is too sharp to be just technology: technology was gradually developed over years - from "nearly useless" to "automate everything". What happened is this: https://en.wikipedia.org/wiki/Nixon_Shock https://en.wikipedia.org/wiki/Nixon_Shock