I'm up to the "I dunno maybe children working 13 hour shifts is bad, guys" part of Capital and it feels important to inform people that haven't read it yet that capitalists in the 19th century were not by any means wringing their hands and twirling their mustaches about employing children to squeeze out profits, they were hiring "experts" to write newspaper articles for them, explaining how "well, the socialists have these big demands about an 8-hour work day, and taking Saturdays off, but it's actually just so complicated, it's too complicated for most people to understand, we just NEED to hire children for night shifts because the stamina of their strong, youthful bodies is the only way we can survive as a business! It's science, you see. Economics doesn't work like that, just ask our economics professors at Oxford. You CAN'T turn a profit only working people 8 hours! Trust the experts, they know. It's just so complicated..."
That exact infuriating cadence that you read in New York Times articles, in the Atlantic Monthly, in the WaPo and all the other bourgeois rags where "everything is so complicated, and it's actually a lot more complicated than you think.." that has been around since the beginning. It is nothing new. So the next time you see some op-ed from Matt Yglesias or any of those other guys huffing their own farts about how "complicated" everything is, and how "unrealistic" a 30-hour work week is, remember that Marx was dealing with that exact class of "intellectuals" "explaining" how working 13 hours at age 10 was "vital" to the "moral fibre" of those poor kids.