breath..."What Mori teaches is a fact for the district court to find using the standard of preponderance of the evidence."
If you want to study the effects of a vaccine in COV-19 patients, you don't take a 'preponderance of the evidence' from the results of a study using the vaccine on a group of patients with common colds.
If you want to study the effects of EPA on patients with 500 mgms of trigs/dcl or over, you don't study a group of patients with UNDER 500 mgms of trigs/dcl.