This is indeed a mystery, [remarked Watson]. What do you imagine that it means? I have no data yet. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suite theories, instead of theories to suit facts.
- Sherlock Holmes
Why do we insist on listening to those who conjecture about a topic in the absence of tangible evidence that their conjecture is based on facts? Speculative statements about the favorable outcome of one method or another. Uninformed opinions about the usefulness or not usefulness of a technique?