Mathematics is not convoluted or complex, it requires thinking or being able to foresee ideas without loss of generality (thinking in general terms or abstract way). A mathematician looks primarily for structure, symmetry, ingenuity, etc. Lacking in being able to attain this state of mind explicitly is the only difficulty. If an individual can circumvent this there is no other such complexity of this order in mathematics. This notion can be seen to hold when applied to other areas such as philosophy, art, science, etc and pertaining to every area of knowledge.