Part 7/9:
As the discussion unfolds, the speaker proposes that the methodology used for measuring noise levels likely lacks the rigor necessary for making such broad claims. Data that appears to show a difference of just 1.2 decibels could result from minor changes in positioning during the measurement process. He suggests that personal testing, by using decibel measuring apps, would illustrate how trivial the differences can be when sound levels fluctuate from slight movements.