The anesthesiologist said so, and Director Zhang hurriedly returned the pen.
Professor Yang really had something interesting. The way he held the knife was quite innovative and especially effective. Previously, Director Zhang had never given any thought to the posture of holding a knife; surgeons had been holding it the same way for one to two hundred years without anyone thinking it was incorrect.
Indeed, in medicine, certain practices are just like that, continuing on tradition without necessarily knowing why—they were simply passed down by the older generations.
Then one day, someone came up with an innovation, and everyone suddenly realized it could be done differently.
