"pick holes in something "的定义和意义

What is the origin of the idiom "pick holes in something" and when to use it?

The origin of the idiom "pick holes in something" is unclear, but it may have originated from the practice of examining cloth for defects by holding it up to the light and looking for small holes or imperfections. Over time, the phrase came to be used more broadly to describe any situation where someone is overly critical or nit-picky in their evaluation of something.