You're asking the exact right questions. How can they know when they can't see "life" at this small a level to begin with.
It's the same as how all the "experts" knew viruses caused rabies, smallpox, Spanish flu, polio, etc. in the 1870-1932 time frame which was before the electron microscope was invented. Now, had they not destroyed Royal Rife's life and his dark field microscope, they would have to come to discover the truth of the matter at the tail end of this time period.
You're asking the exact right questions. How can they know when they can't see "life" at this small a level to begin with.
It's the same as how all the "experts" knew viruses caused rabies, smallpox, Spanish flu, polio, etc. in the 1870-1932 time frame which was before the electron microscope was invented. Now, had they not destroyed Royal Rife's life and his dark field microscope, they would have to come to discover the truth of the matter at the tail end of this time period.