Cars are far simpler because they all follow the same basic concepts and most functions are pretty much isolated from each other other than by the obvious mechanisms. That's a dream world compared to something like Twitter because so many things have to be tied to so many other things. You could make a Twitter-lite that was pretty much independent as a car is, but it would have terrible performance.Experience makes the getting to knowing part easier because the mechanic knows not all cars are exactly the same yet they know all the components that makes an engine work. . Would sexual intercourse be a better analogy for you? Pick your poison.Knowing the architecture is what allows you to fix a problem without breaking something else. Car repair isn’t a good analogy.
My presumption is that hardly anyone in the field knows the architecture as it's forever evolving, what they do have is the ability to adjust & find what's needed to complete tasks. For the really knowledgeable folks it would likely take them half a year to become effective in Twitter security/architecture. That's my wild guess. It's like saying a car mechanic who's been working on cars learned nothing from working on many different cars over 20 years and when one never seen before like a 2021 Rolls-Royce Ghost rolls onto their lot, they forget what parts an engine needs to run.
The mechanic has a good idea of where and what to look for. Might have to learn new things specific to Rolls but that mechanic after a slow start will get acquainted fairly fast.
Even cars are becoming less and less isolated these days with all the computer systems.
