What this means for your play
Choices with practical meaning.
Game truth, player knowledge and NPC knowledge are different things. Someone can know a fact you have not discovered, or remain unaware of something recorded elsewhere. Investigation gives uncertainty a real place in the campaign.
Meet people with their own knowledge
Allies, contacts, specialists and rivals are not extensions of your character. Their experiences, relationships and behaviour belong to them. The game distinguishes what a person knows from what is objectively true, so a conversation does not automatically expose everything held in world state.
Let an inconclusive result stay inconclusive
A scan can fail to establish a fact. A hypothesis can remain unverified, and an investigation can leave knowledge unresolved. Later decisions work with the evidence you actually obtained. Progress does not require the narrator to promote a suspicion into a proven discovery.