That is what the word inquiry has been used for - in ascertaining the validity of a situation, without placing undue negativity on the situation.
We would say that we are inquiring about a verbal pronouncement made by an executive.
In the industrial world, whole frameworks are built to make such inquiries as neutral as possible. The frameworks are called Quality Assurance.
The attitude in quality assurance is, regardless if your opinion is true, it cannot hold unless supported by sufficient evidence.
We would first state that the current amount of evidence produced is insufficient to accept an observation or opinion as an existent and usable entity. We would state to the producer, that the opinion or observation at its current state is useless and unusable, regardless how true it might be.
We would therefore perform an evidentiary inquiry to increase the quality of an indication or observation, to levels required for the observation or opinion to be a usable entity within the process flow of a product or decisions made in a company, where you as a stake holder and contributor is involved in making such decisions.
I am thinking the phrase would be to make some quality assurance inquiries, or to subject an observation to quality improvement procedures.