My greatest Twitter achievement is that I raved about this book in a tweet and Cathy O'Neil liked it. Maybe I was easily persuaded by O'Neil's writing because I'm an aspiring data scientist hell bent on working for social good. Maybe it's because I've spent years in social justice activism. Or maybe it's because this is just a damn good book. O'Neil walks us through several algorithms wreaking havoc on society -- from hiring to scheduling to performance evaluations. Even if you, like me, were craving more technical material, O'Neil name drops the algorithms and you can simply do a quick Google search on them. This is the kind of popular data science book we need.