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Data scientist Cathy O’Neill talks about working on Wall Street then joining Occupy Wall Street. Full of great insights.

The process of writing exposes your own ignorance and half-baked assumptions: …I often don’t realize what I don’t know until I’ve started writing, at which point my unanswered questions and lazy, autofill thinking becomes obvious. Then I freak out and panic and push myself way harder[.]
I’m a strong believer that ignorance is important in science. If you know too much, you start seeing why things won’t work. That’s why it’s important to change your field to collect more ignorance.

(Source: youtube.com)