I'm Mark A. Mandel.
Professionally, I'm a linguist -- a language scientist -- recently retired from the Linguistic Data Consortium of the University of Pennsylvania. I've worked on Thai, Tagalog, Pashto, Tigrinya, Moroccan Berber, and Yoruba, and also on Bengali, Tamil, and Urdu. I wrote my dissertation on American Sign Language, and I've studied lots more languages to a greater or lesser degree. I frequent the LINGUIST List as well as the mailing lists of the American Dialect Society and the American Name Society.