“But if they produce a limited number of innovators,” she continued instead, “they have at least one huge offsetting advantage when it comes to promoting change. Once any ’cat figures out something new, the new knowledge can be very rapidly transmitted to all other treecats.”

“Telepathy.” White Haven nodded, blue eyes bright. “They just ‘tell’ each other about it!”

“Not quite,” Honor disagreed. “From what Nimitz and Samantha tell me, the level of communication between most treecats is actually fairly analogous to human language, at least where the deliberate exchange of information is concerned. I doubt that most humans will ever be able even to imagine what it must be like to receive all of the emotional ‘sideband transmissions’ that accompany any treecat conversation. But their ability to explain things to one another on a cognitive level isn’t all that much greater than it would be for humans. Faster-lots faster, apparently—but not the sort of mind-to-mind, my-mind-is-your-mind, sharing some science-fiction writers have postulated.”

“So how do they do it?” the earl asked. “You said they can transmit the new knowledge very rapidly, so obviously something else is happening.”

“Exactly. You see, the ‘cats’ entire society revolves around a particular group called ‘memory singers.’ They’re always female, apparently because females have naturally stronger mind-voices and mind-glows, and they’re almost but not quite matriarchs.”

Honor frowned thoughtfully.

“The treecat clans are governed by their elders, who are chosen—by a process, I might add, which apparently bears absolutely no relationship to human elections or the hereditary transmission of leadership—primarily for their particular abilities in specific activities or crafts which are critical to the clan’s survival. But the memory singers form a special craft group, almost a caste, which is treated with enormous deference by the entire clan. In fact, every memory singer is automatically a clan elder, regardless of her actual age. And because of their importance to the clan, they’re protected and guarded fanatically and absolutely banned from any activity which might endanger them—sort of like a steadholder.”

She grinned with unalloyed cheerfulness for the first time in what seemed to have been years, and both Alexanders chuckled sympathetically.

“The thing that makes them so important is that they’re the keepers of the ‘cats’ history and information base. They’re able to form so deep a mental bond with any other ‘cat that they actually experience what happened to that other ’cat as if it had happened to them. Not only that, but they can then reproduce those experiences in precise, exact detail, and share them with other ’cats… or pass them on to other memory singers. You might think of it as sort of the ultimate oral history tradition, except that the entire experience itself is transmitted, not simply from ’cat to ’cat, but actually across generations. According to Nimitz and Samantha, there’s a ‘memory song’ which consists of the actual eyewitness experience of a ’cat scout who saw the first landing of a survey crew on Sphinx almost a thousand T-years ago.”