There was no telling, of course, what was going on in the Red zone between the turnpikes. Signals intelligence shining out into space from their part of the habitat ring suggested that the Aïdans were at least as advanced, in their use of mobile communications, as people here. Because they were also quite good at encryption, there was no way of telling what they were saying to one another. But Blue, for its part, had made a conscious decision not to repeat what was known as Tav’s Mistake.