What type of tone would be inappropriate in a document explaining how to perform brain surgery?

An inappropriate tone for a document explaining how to perform brain surgery would be overly casual or flippant. Using humor or a light-hearted approach could undermine the seriousness and complexity of the procedure, potentially leading to misunderstandings or a lack of respect for the gravity of the surgery. Additionally, a tone that lacks professionalism or is overly simplistic could fail to convey the critical nuances and precision required in such a high-stakes medical field.