What is the origin of the idiom "horse sense" and when to use it?

The origin of the idiom "horse sense" can be traced back to the early 19th century in the United States. It refers to the practical wisdom and common-sense knowledge that one might attribute to a horse – a seemingly simple and straightforward animal. This expression is used to describe someone who has a practical and sensible approach to solving problems or making decisions. It implies that the person possesses a down-to-earth, straightforward, and intuitive understanding of what is right or sensible.