Where did COVID actually come from?: Lab leak

The published papers

The WIV published a paper in 2015 describing the construction of a chimeric coronavirus — bat spike protein grafted onto a SARS backbone, capable of infecting human airway cells. Peer-reviewed. Available to anyone with a library card. We read it. Then we read the next one, and the next, until the pattern was unmistakable: the WIV had spent years building the exact technical capability to create a virus with the exact properties of SARS-CoV-2.

Geography first. The closest known relatives — RaTG13 lineage — were collected from caves in Yunnan, 1,500 kilometers away. Bats carrying these viruses are not native to Wuhan. No wildlife trade route links Yunnan bat habitats to the Huanan Market. There is a virology lab in Wuhan with the world’s largest bat coronavirus collection, conducting gain-of-function experiments at biosafety level 2.

The furin cleavage site

SARS-CoV-2’s spike protein contains a furin cleavage site — a feature no known SARS-related coronavirus in the same subgenus carries. It appeared fully formed in the first isolate. In nature, such features emerge through gradual recombination, leaving traces. No trace found. In a lab, inserting a furin cleavage site is a standard technique. The DARPA DEFUSE proposal described doing exactly this in 2018.

The epistemic process camp documented the investigation’s corruption, and without that work our case would be dismissed as speculation. Fauci’s FOIA correspondence showed virologists privately acknowledging lab-origin plausibility while publicly insisting on natural origin.

Where we concede ground: Circumstantial evidence, no matter how strong, is circumstantial. We have not found the engineered precursor.

What would change our mind: The intermediate animal host identified with viral sequences showing evolutionary steps from bat to human pathogen.

Read the full synthesis: Where did COVID actually come from?