Picture of man with pipe and sweaterTwo weeks ago I wrote about Diaz v. Lobels,* a case I think exemplifies some of the confusion concerning just what an accessible website should be. Today I want to take a harder look at the Court’s exclusion of testimony from the plaintiff’s expert to ask the question: Just what should an ADA expert testify about? The issue has come up in only three reported cases, each of which has its own take on the matter.

The exclusion of the plaintiff’s expert testimony in Diaz v. Lobels was based on two failings. The Court found the expert, Michael McCaffrey, failed to sufficiently describe his methodology and process, and failed to establish the methods were widely accepted or standard in the field. The Court did not reject the assumption underlying the report because the plaintiff and defendant stipulated that compliance with WCAG 2.0 or 2.1 would make the website accessible for ADA purposes and that non-compliance would make it inaccessible. Instead the Court focused on the “high level” description of the methods used by the team of individuals working for the expert, which the Court found insufficient when combined with a lack of testimony concerning the standards used. More


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