[F]act testimony, no matter how thoroughly contradicted or impeached, may create an issue for the jury, so long as it is not supernatural.-- The Sherwin-Williams Company v. Trellvion Gaines (Miss. Sept. 8, 2011) at ¶18.
... This decision reverses the $7M lead-poisoning verdict against Sherwin-Williams down in Jefferson County back in 2009. Worth a look for lawyers re: "gatekeeping" on expert testimony.