By greatest invention I mean something that had big and positive influence.
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Like it or not. The iPhone. It changed the phone and how we use it. I literally use my android phone for everything now, as a credit card, ticket, pc, social, gaming… some people get laid and marry thanks to them…
Marriage and sex decline when societies adopt smartphones and the digital craze.
Maybe sex with other people declines 😉
Same as when the education level goes up. You know too much, I guess.
I should drink from one of those leaded Stanley cups.
