In the universe in question, there’s another intelligent silicon-based species, with the typical member of the species being many times as intelligent as humans. With intimate knowledge of quantum mechanics and general relativity, they’ve mastered the ability to create and control warp drives that allow near-instantaneous travel to arbitrarily-distant locations, with some caveats. Warp drives don’t work near gravity wells, and the calculations required to properly operate them are so immensely complex that it takes years of mathematical training to be able to do so. Even this species’s most powerful computers can’t manage to solve the Einstein field equations fast enough to continually update the warp drive’s parameters in real time; only the most highly-trained “navigators” can figure out exactly what needs to happen and when in order to get the ship safely to its destination.
At least, their most powerful computers can’t do it. The problem comes down to solving the EFEs for some complex metrics and with other constraints, which a modern human laptop can do in at most a few second (I would know, I’ve done such things myself). Their equivalent room-sized “supercomputer” can do maybe a few hundred million operations per second, or even a few billion if it’s really pushed; compare to my very-old Xbox that can manage over a trillion operations per second easily. This has been the case for thousands of years for this civilization.
This species has access to advanced quantum physics and general relativity and has the technology to build a fleet of NTR starships and warp drives, but for some reason they can’t build computers more powerful than what we had in the 1980s. Why is that?
I’ve already considered a few things but I can’t come up with a good answer:
- Maybe they didn’t have the right resources to build efficient transistors?
- The life is silicon-based, there’d no doubt be a surplus of silicon, germanium, etc. semiconducting elements for them to work with
- Maybe they just never thought that they would be useful (i.e. computers would only really be used for messaging, news, simple controls for doors and lights and locks and the like)?
- The difficulty of warp travel almost-necessarily produces something that computers would be developed to overcome
- Maybe environment is too harsh and computers need complex shielding to work reliably?
- I find it hard to believe that complex and intelligent life would evolve somewhere where a computer can’t keep its memory sectors straight for five minutes, and radiation there isn’t that high anyway
- Maybe they don't like building computers out of what's functionally their own flesh? (see comments for credit)
- We're carbon based and we figured out how to use graphene and CNT for various applications
Notes about the species (do with these details as you will):
- Their homeworld is a silane-rich moon of a gas giant whose very strong magnetic field protects the giant’s six moons from radiation
- The average member of this lizard-like species stands about five meters tall and weighs around 1,500 kg; on account of stronger silicon-based musculature and gravity five times lower than on earth, they can still stand (and fly, given powerful wings and dense atmosphere)
- Materials like carbon, silicon, phosphorus, etc. are common on the homeworld
TL;DR Why does a highly-advanced and intelligent civilization not develop advanced computers after thousands of years despite having all the expertise and resources available?