[ch4s3]

On an individual level, lets assume a polyp in the colon, there's no way to know which may become individually cancerous and which will remain small and benign. The genes are the same, the size and appearance may be the same. You can't know.

At a population level its well established that beyond a certain point you're injuring more people than you are helping by doing the colonoscopies at all. Where to draw that line is where the debate is playing out. The problem is well known, and I'm not aware of ANYONE seriously suggesting that it's possible to eliminate this problem.