I recently watched this video, there’s a comment on that video that says:

问题是，我见过的路痴，就是跟着地图，导航走也会迷路😂

比如我老婆，她看导航，那么大一张地图她只能理解一个数字：距离目标地点多少米😂。

她跟导航的方式是：先随机找个方向走，然后看目标距离是增加还是减少。如果发现增加了就随机再换个方向。如果发现减少了就一直走下去😂。

——某 YouTube 用戶的評論

This kind of navigation technique has a special term in computer science, which is called “gradient descent”.