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A SWAG Surprise in the $19 Billion Chevron Case

Water derived from the oil refining process in Ecuador being dumped into a rain forest pool in 2012
Water derived from the oil refining process in Ecuador being dumped into a rain forest pool in 2012Photograph by Massimiliano Clausi/laif/Redux

You’ve heard of courtroom “junk science.” How about SWAG?

Junk science refers to dubious technical evidence presented by hired-gun expert witnesses. It’s one of the banes of civil litigation. SWAG, or “scientific wild-assed guessing,” is a form of junk science that came up yesterday in Chevron’s continuing lawsuit against a plaintiffs’ attorney who won a $19 billion pollution verdict against the company in Ecuador.