... you know what? For the kids in the back and for everyone who is worried they're out of time, can those of you kicked ass post-30 please raise a hand?
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I like @worrydream's list of 60 over 60: https://twitter.com/worrydream/status/420420908965036033 … I believe Peter Drucker was mostly a consultant up until his 60s; then he shifted his primary focus to teaching and academia, at 62, and continued into his 90s.
