As they report in a recently completed paper, they, too, constructed an electronic network of linked Supreme Court opinions, this time using the majority opinions gathered from about 30, 000 cases issued between the late 18th century and today.
It was nearly 20 years before a radio based on FHSS was eventually constructed, using electronic components rather than mechanical components and paper rolls.
Meanwhile, Dr Forrest's group has constructed an experimental set-up, described in a paper recently submitted to the Evolutionary Computation Journal, that mimics the way real immune systems identify invading pathogens.