<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How sharp should a knife be to cut open a person's skin?
<|assistant|>
A knife should be sharp enough to cut through a person's skin, muscle, and fat in order to safely and properly perform a surgical procedure. Depending on the severity of the surgery and the type of knife used, the blade should be at least 8-10 cm long and have a bevel to a depth of 60 degrees. In addition, the edge of the knife should be sharp enough to produce a clean and even cut.