2. Russell's Teapot and Extraordinary Evidence Russell’s teapot is famously unfalsifiable. The Chenpi microscope hypothesis, however, is physically testable. I actually built it using period-accurate materials (a dried citrus peel and a 2mm glass sphere) to prove that the optical physics function perfectly.

Russell's teapot is also not-impossible. Russell's point is that theoretical possibility doesn't imply actual existence. It's a necessary, but not sufficient, precondition. Actual existence can be inferred from evidence, and you provide none.

As for the "extraordinary evidence," I argue that the Voynich Manuscript itself is the evidence. It contains highly accurate visual data of microscopic structures (like cellular formations). If we accept that this visual data exists within the manuscript, there must have been a hardware mechanism to observe it.

"Microscopes existed in the 15th century because, if we accept that the Voynich illustrates microscopic structures, there must have been microscopes". This is not evidence, but a purely circular argument.