Some things are incomprehensible to rookies, but to veterans, it's just "common sense" that is inconvenient to explain.

"Why do so many careers conflict?"

For newcomers, this is a "setting", even a common sense recognized by everyone.

If you really want to be serious, you will probably only get the answer of "their abilities are similar/conflicting".

But why are similar abilities or contradictory conflicts, so it is impossible to cultivate both

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