Evidence Commons^™

"Pics Or It Didn't Happen" And "Show Me The Receipts": A Folk Evidentiary Rule, Timothy Lau

Vanderbilt Law Review

"Pics or It Didn't Happen," "Show Me the Receipts," and related refrains are frequently encountered in online discussion threads today. They are typically invoked to demand corroboration in support of a claim or to declare from the outset that a claim is supported by some sort of proof In many ways, they are the functional counterpart of legal evidentiary objections in online discussions. They embody a folk evidentiary rule, democratically and organically developed by the people.

The topic of "Pics or It Didn't Happen" is much broader than can be covered in a symposium piece. As such, this Article seeks …

Symposium: Reimagining The Rules Of Evidence At 50, Edward K. Cheng

Vanderbilt Law School Faculty Publications

Prior to the eighteenth century, cartographers would often fill uncharted areas of maps with sea monsters, other artwork, or even rank speculation—a phenomenon labeled “horror vacui,” or fear of empty spaces. For example, in Paolo Forlani’s world map of 1565, a yet to-be-discovered southern continent was depicted with anticipated mountain chains and animals. The possible explanations for horror vacui are varied, but one reason may have been a desire “to hide [the mapmakers’] ignorance.” Not until “maps began to be thought of as more purely scientific instruments . . . [did] cartographers . . . restrain their concern about spaces …

Of Bass Notes And Base Rates: Avoiding Mistaken Inferences About Copying, Christopher Buccafusco, Rebecca Tushnet

Faculty Scholarship

To prove copyright infringement, a plaintiff must convince a jury that the defendant copied from the plaintiff’s work rather than independently creating it. To prove copying, especially cases involving music, it’s common for plaintiffs and their experts to argue that the similarities between the parties’ creative works are so great that it is simply implausible that the defendant’s work was created without copying from the plaintiff’s work. Unfortunately, in its present form, the argument is mathematically illiterate: It assumes, without any underlying evidence, that the experts know or could reasonably estimate how likely it is that a song with similarity …

How Florida’S Courts Should Evaluate The Admissibility Of Field Sobriety Testing And Blood Thc Levels Evidence In Marijuana Impaired Driving Prosecutions, Christopher Bomhoff

FIU Law Review

Field sobriety and blood alcohol concentration tests are proven reliable techniques to determine whether a person us under the influence of alcohol. No such technique has been developed to reliably determine whether a person is under the influence of marijuana. However, despite a lack of scientific consensus regarding the reliability of field sobriety and blood toxicology tests to determine marijuana impairment, these methods are routinely used as evidence of guilt in marijuana impaired driving prosecutions. Twenty-four states have legalized the recreational use of marijuana, and Florida appears to be set to join them in the near future. As a result …