Editing Openai/680845c9-c944-8012-bafb-fa1bab1e9277 (section)

====== Denier argument: "You never isolate a virus in its pure form—always in cell cultures or with additives. That's not real isolation." ======

Counterpoint: This is a misunderstanding of modern isolation—isolation doesn’t mean absence of all other matter, it means identifying a causative agent and demonstrating it independently.

How to bolster:
* Highlight studies using single-particle isolation methods (e.g., Allen 2011, Liu 2020) and ultra-centrifugation plus electron microscopy.
* Emphasize that infectivity tests, genome confirmation, and particle purification meet the scientific definition of "isolation," even if it's not philosophically perfect.