Final answer:
Prior to changing a saw blade or making other major adjustments, obtaining permission is a crucial safety measure that also adheres to safety regulations and proper operating procedures.
Step-by-step explanation:
When using equipment such as a saw, it is essential to prioritize safety by seeking permission before proceeding with any significant modifications, including the changing of the blade or making other major adjustments. This is not only a best practice for personal safety but may also be required by safety regulations and operating procedures in a professional or educational setting. To prevent accidents and ensure that the equipment is used correctly, adequate training and understanding of the machinery's operation are crucial.