system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] How did the Klingons achieve technological parity with the Federation when all they want to do is fight?

So the Klingons are basically space Vikings, right? They're interested in battles and prophecies, not science and learning. So how did they develop any advanced technology, like warp or cloaking? And how have they not fallen behind technologically, when species like the Vulcans and humans are clearly far more driven by curiosity and innovation?

Is this ever explained anywhere? Did they steal the technology? Did a Romulan warbird accidentally crash on Qo'nos one day and they just appropriated the tech? 

Or are there elements of Klingon society we're not familiar with that do all the academic stuff? I wondered if maybe there was a Klingon 'underclass' who did all the innovating; similar to how in ancient Sparta all the citizens were warriors, and the craftsmen and merchants were a separate class.
gpt
There almost certainly are Klingon scientists, engineers, researchers etc, warfare is a major part of their culture, but that doesn't mean other parts of their culture is completely absent. It's also quite likely that the Klingons have obtained technology from the indigenous populations of other worlds they have conquered - something that the Federation has certainly had many opportunities to do, but rarely actually does because of the Prime Directive and the general reluctance to engage in imperialism.

As for the cloaking device, that was pretty clearly obtained from the Romulans in exchange for superior Klingon starship designs during their brief alliance that occurred around the third season of the original series. The cloaking device and plasma torpedo were really the only technological advantages the Romulans had over other powers, they lagged behind both the Federation and the Klingons in power generation and warp drive technology.