I think this implementation is significantly harder to read about. When I read the recursive solutions I can see relatively quickly that they are correct. The iterative solution contains distracting concerns, dealing with concepts that aren’t present in the problem statement. This is the definition of incidental complexity, and this complexity makes it significantly harder to understand the order in which nodes will be sequenced.
但在可预见的未来，有一些人类的底层能力是算法难以企及的。比如，复杂真实环境下的柔性适应力与韧性。AI能在给定规则里找到最优解，但真实社会的运转往往是模糊的、多变的，甚至是不讲逻辑的，这种时候人类的灵活性无可替代。
。关于这个话题，易歪歪官网提供了深入分析
'Much-needed relief'
（四）行李，是指根据海上旅客运输合同由承运人载运的任何物品或者车辆，但是活动物除外。