We don't let a car company just throw out a car and start driving it around without checking that the wheels are fastened on. We know that would result in death; but for some reason we have no hesitation at throwing out some algorithms untested and unmonitored even when they're making very important life-and-death decisions.

The disconnect I was experiencing was that people hated Wall Street, but they loved tech.

When people are not given an option by some secret scoring system, it's very hard to complain, so they often don't even know that they've been victimized.

The public trusts big data way too much.

Especially from my experience as a quant in a hedge fund - I naively went in there thinking that I would be making the market more efficient and then was like, oh my God, I'm part of this terrible system that is blowing up the world's economy, and I don't want to be a part of that.

You'll never be able to really measure anything, right? Including teachers.

Every system using data separates humanity into winners and losers.