Federal Rule of Evidence 702: A Useful Rule (When It's Followed)

Sep 09, 2021

When it comes to evidentiary disputes, it can be tough to predict how a particular judge will rule. What is inadmissible character evidence (Rule 404(a)) to one judge might be admissible "other acts" evidence (Rule 404(b)) to another.

And when it comes to expert opinion testimony, there can be even more uncertainty. A judge considering a shaky opinion might—citing the Supreme Court's landmark ruling, Daubert v. Merrell Dow Pharmaceuticals, Inc.—exclude the opinion on the...

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The Expert Impeachment Witness: Fight the Facts, Not the Opinion

Apr 29, 2018

"Like a house built on sand, the expert's opinion is no better than the facts upon which it is based." This famous line from Kennemur v. State of California, 133 Cal. App. 3d 907, 924 (1982), can be found in virtually every California motion to exclude an opponent's expert witness. And it is typically cited for one of two arguments:

There is the junk science argument. This argument seeks to show the expert's reasoning or methodology is unreliable. It is used against the expert...

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