Back in 1995, the LA Times ran an article about O.J. Simpson's defense team's "assault on the [Los Angeles Police] department's ability to use sophisticated science to solve crimes." One its expert witnesses walked the jury through powerful demonstrative evidence detailing DNA contamination in its crime lab. Beyond the Simpson case, the article quoted a defense attorney who said the witness' testimony "will provide ammunition for years to come for lawyers defending poor clients who don't have...
When it comes to hearsay, one method of spotting objectionable hearsay is to consider whether the probability of the evidence being true (or not true) turns on the credibility of someone who cannot be cross-examined. As Justice John Marshall wrote in Queen v. Hepburn, 7 Cranch 290, 296 (1813), "[i]ts intrinsic weakness, its incompetency to satisfy the mind of the existence of fact, and the frauds which might be practiced under its cover, combine to support the rule that...
When it comes to privileges and evidence, determining when a waiver has occurred can be tricky. It's a little like knowing when an egg is boiled. While some like runny yokes, others want a virtual powdering to soothe any fears of Salmonella. Judges of eggs are just like judges of law: they're human. What may be a waiver to one may not be a waiver to another.
Fortunately, case law provides some guidelines for attorneys to at least understand how waivers should be...
When questioning witnesses, the principle of impeachment simply means the introduction of evidence that may cast doubt on the credibility of the witness or the validity of the testimony. There are countless ways to impeach a witness. California Evidence Code section 780 identifies the most common methods, but they are expressly non-exhaustive: “[T]he … jury may consider in determining the credibility of a witness any matter that has any tendency in reason to prove or disprove the...
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