You don't necessarily have to write a non-transitive cmp() function willingly, it may happen that you write one without realizing due to some edge cases where it's not transitive.
My laptop has an italian layout keyboard because it was a pain to find a good priced one with the US layout. On windows there's no way to do the and symbols without using Alt combinations and on linux you need to use a weird compose key. Also square brackets require you to press Shift and curly brackets require both Shift and Alt.
TBF the error can become that big if you do a bunch of unstable operations (i.e. operations that continue to increase the relative error), though that's probably not what is happening here.
NOTE: When Qt is installed on the system, the native style uses Qt's QStyle to achieve native looking widgets.
I'm not that familiar with KDE's styling, but if I remember well it should just be a Qt style, so it should work.
Regarding rewriting Dolphin, I think in theory you could do that, in practice it's probably pretty challenging given the amount of features Dolphin has.
Every atom has energy in it, regardless of whether it is radioactive or not. Radioactiveness just makes it relatively easy to extract that energy. But even then, it's not that simple, not every radioactive material is good for a nuclear reactor. If the fuel absorbs too many neutrons without fission, or produces elements that do, then it can become poison for the reactor. And if it, or the elements it produces, emit very few delayed neutrons and very quickly then it makes it harder to keep the reactor in a sub-critical state (i.e. it makes it harder to not make it explore). Often for these reasons you can't fully use reprocessed fuel, and instead you have to mix it in low percentages with normal fuel. Reprocessed fuel is also harder (thus cost more) to produce since you have to work with highly radioactive materials.
I did that a couple of times, but it was more like "I don't want to grind all of this stuff, I want to skip to the fun part". Also, it's morally different because it impacts nobody else.
People also don't have a backup device though.