CLEAN : British archaeologist aims to pinpoint Nefertitis tomb

The video begins with a discussion on following evidence, suggesting possible hidden doorways in a burial chamber. The speaker emphasizes the importance of verifying theories, even if they seem plausible. The latter part of the transcript contains unrelated and unclear content, lacking logical coherence.

What does the speaker imply about the reliability of theories?

Why does the speaker believe it is worth checking for another doorway?