It’s not about the driver experience, it’s about the road inspection. If the patient has a pre-cancerous polyp the inspector sees, they will cut it out, problem averted. If the patient has a pre-cancerous polyp obscured by stool, it gets missed and then in a few years turns to cancer. And survival rates for colon cancer are depressingly low.
Your colon is like a road:
Would you rather drive down a smooth, well maintained, Clean road or a muddy mess that’s never seen a cleanup crew?
You don’t technically have to, but I think whoever is driving the colonoscope might refuse to work in those conditions.
It’s not about the driver experience, it’s about the road inspection. If the patient has a pre-cancerous polyp the inspector sees, they will cut it out, problem averted. If the patient has a pre-cancerous polyp obscured by stool, it gets missed and then in a few years turns to cancer. And survival rates for colon cancer are depressingly low.