Verify the substance rather than the tone of an answer.
A fluent explanation may still contain mistakes. For school facts, compare the precise claim with the relevant textbook, calculation or experiment. Separate checked facts from unresolved parts. A second chatbot repeating a statement is not necessarily independent evidence. “I do not have enough evidence” is an acceptable conclusion.
Notebook: write your corrected or unresolved conclusion, the evidence you actually checked, and a reflection. Do not include passwords, identity documents or private information. Original BrainCheck companion content, BCAI-v1.