I have 30 years of experience, and specialize in the field of linguistics with specific knowledge in the areas of forensic linguistics, theory of meaning and sociolinguistics. I have published on such topics as meaning, authorship and pragmatic analysis of communications. I have testified 11 times on topics such as covert recordings, authorship and confessions. I often muse on being probably one of a very few people who have worked with both the FBI and the Grateful Dead.