Often I interact with others that are reluctant to share information or knowledge with me unless they are sure as to it’s accuracy and completeness.

While obviously there is little value in fake news, sharing what you know, even if incomplete and potentially inaccurate is always better then holding back.

The potential for inaccuracy is based on what you don’t know or are not sure about, and that should be disclosed for sure, but to hold back from sharing at all until you are convinced you have the whole story can be harmful both to you and those you interact with.

Combining Knowledge

Holding back what you know, especially if incomplete virtually eliminates the ability to for both you and others to arrive at more holistically founded better conclusions.

I am always disappointed in those who hold back a piece of the puzzle.  This reticence toward open but honest disclosure can limit the range of outcomes.  Often the best outcome becomes unattainable.

Motivation

What is the root cause of holding back information?  Most likely the motivation derives in some way from alignment with personal interests.

Obviously not sharing is more beneficial to you than those you are holding out on.  Of course you may have the misguided opinion that it is in their best interest.

My personal experience leads me to believe this is never the case.  Open sharing, even information others might dislike hearing is always the best approach.

It is not possible to tell others things you don’t know, making it up is not a good idea, but just clarifying you don’t know an answer can be valuable information in and of itself.