social engineering, 30 years ago: "No, no, she's out today. I'm a temp. I just need the password so that Miller doesn't tear me a new one when he gets back in twenty minutes. Please?"
social engineering, now: "what do you mean I only have three brothers, I talk with all four of them on Facebook -- OH NO"
remember: all it takes for a trick to work is for the fooler to be audacious and careful and the foolee to assume the fooler isn't trying to fool them
be as smart as you want about the tech
but get smart about the people or else, is what the present day and coming days whisper in my ear