"how do you know he's wrong?" In short; we don't. Science is not about who's right and who's wrong. Science is about carefully formulating plausible theories,

"how do you know he's wrong?" In short; we don't. Science is not about who's right and who's wrong. Science is about carefully formulating plausible theories, and then proving or disproving those through rigorous research, experimental results, referencing previous verifiable research work, and thorough peer review. Even then not a single research paper will claim to be absolute truth; there is always room for doubt, criticism and altering views based on followup research. It's a slow learning process based on a lot of trial and error. What was posted above were a lot of wild claims flying directly in the face of broadly accepted knowledge accumulated by decades of diligent cancer research. The lack of any reliable sources to back up those claims makes it more than likely to be just misinformation and not to be taken seriously. Besides, the way the post read and how quickly such a long epistle was posted felt more like it was simply copy-pasted from some conspiracy theorist's manifest, rather than written by someone genuinely interested in taking part in the discussion.