uh huh.. No one who wanted to stay anonymous would say "first exposure to a Tixo during grad school". There only was ONE TX-0 and it was at MIT, so it is "Tixo" or "the Tixo" not "a Tixo". Even if it was a typo, the grad students who used TX-0 and were living near Palo Alto in the mid-80's is pretty small. I can actually only think of one person, but I doubt he was involved with this :-) Besides: How do you build a "secret" 5 story underground facility in Palo Alto with and 1) have the right number of cars in the parking lot and 2) not hit the water table. The industrial parts of PA are either in the flats next to 101 and the SF Bay or are near Foothill Expressway where almost all of the industrial parks are owned by Stanford.