If projects, people or problems are polarized so that they are either very easy or impossible, is there an appropriate word to describe the polarization towards the two extremes?
For example, if I succeed it will never be difficult but very easy and still I don't often succeed and it's unrelated to how much effort I make.
More precise, I'm practicing solving problems and I either answer correctly with almost no effort or it is impossible when it is not easy.
Similarly, there are projects, people, relations and arrangements that are either easy or impossible and even you try very hard and work very hard it is still impossible if it is not very easy.
The best word I can think of is "polarization" but it is not a common word to use about what I typically mean here.