

In Echopraxia, the transhuman pilot repeatedly calls the old guy a “roach”.
“I’ve told you before, Daniel: roach isn’t an insult. We’re the ones still standing after the mammals build their nukes, we’re the ones with the stripped-down OS’s so damned simple they work under almost any circumstances. We’re the goddamned Kalashnikovs of thinking meat.”
― Peter Watts, Echopraxia
And one of my favorite Heinlein quotes:
“A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.”
― Robert A. Heinlein
“Luck” meaning, having a lucky mutation that’s beneficial to reproducing in the current ecosystem.