What areas of knowledge be acceptable to learn and push their limits if you were a luddite? The kind of luddism only stretching back before the Industrial Revolution mind you, only to see what effect it would have on the IQ of a controlled population to allow for only certain areas of knowledge in some ways. Would acceptable areas include astronomy, mathematics, history, philosophy, botany, animal biology, geology, and physics? The acceptable technology is only from before the Industrial Revolution mind you, so flintlocks, clocks, and other methods and means from that century and before are perfectly viable.