A* as heuristic (guidance)

Model Smart Dog Ball Retrieval as a search problem.

We can use A* to get a solution. 

A* slides

Chain of Thought 是AI 能夠聰明推理的主因

茫茫大海中，A* 就常常被用來指引 AI 的推理要往哪個方向前進
不至於盲目搜尋（brute force)