As noted in the section on linked lists, the implementations in the last two sections depends on us recognizing the associativity of addition. This recognition is an example of what I call insight into the nature of a problem. When we understand a problem well we can use our creativity to implement direct and elegant solutions. Creativity has its limits, though: some problems inherently resist understanding while still requiring solutions. In such cases it is desirable to have patterns and heuristics that allow us to muddle through despite our lack of insight.
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“以前人工完成稻油轮作费时费力，现在一键操作，10分钟就能完成一亩地的整套工序。”在梁平区安胜镇金平村，新农人李世飞正操作着一台智能播种施肥一体机。机器装备了雷达测速和芯片计算系统，能根据土壤养分实时精准控制播种量。