Inevitability: when the mistakes of one class reach the tolerance limit of another class, there will be chaos, which provides the basis for the emergence of outstanding figures. Outstanding people are decisive figures in controlling and ending chaos. There are many capable people in history, but either they were born in prosperous times and had no chance to turn the tide, or they were too capable and there was no chaos at all.
Opportunity: Opportunity will not appear at any time, and not everyone can grasp it when it does. For example, Xie Xuan won the Battle of Surabaya, but Xie Yan failed to deal with Sun En in the end.
Unity: Outstanding figures are bound to appear in chaos, but the chaos itself is accidental. Outstanding figures can be Zhang San or Li Si.