Vanishingly small amount of facts that affect us are proven in court or by scientific experiment. When living on this world, one must do a lot of “speculation”

Vanishingly small amount of facts that affect us are proven in court or by scientific experiment. When living on this world, one must do a lot of “speculation”, to derive most probable explanations based on limited information available. I guess one could call it “personal opinion”, “informed opinion”, or even “expert oponion” depending on the context. In this specific case, worth remembering, that speed of investigations depend on resources allocated to it; resource allocation is easily impacted by politics. Here is an unrelated example, but it illustrates an attempt to appease Russia: https://www.bbc.com/news/world-europe-14202371 https://www.bbc.com/news/world-europe-14202371 (there was European Arrest Warrant for ex-kgb guy over old eastern Europe stuff; in 2011 Austria detained him, but then swiftly released him within 24 hours)