The Long Way to a Small, Angry Planet (Wayfarers, #1)

by Becky Chambers

Acting all sanctimonious while spouting bad info was a terrible way to win a debate, but a great way to piss people off.

In many ways, the idea of a shared stock of genes drifting through the galaxy is far easier to accept than the daunting notion that none of us may ever have the intellectual capacity to understand how life truly works.