Shooting the man had been easy. Not in the physical sense—that would have been easy in any case, since he was standing right there, and the ambot was largely self-aiming. It had been psychologically easy. Days ago, when she’d been in the worst part of her shift, barely conscious, she’d overheard Ty speaking to Einstein: Fighting isn’t about knowing how. It’s about deciding to. Even in her delirium she had understood that the decision Ty spoke of wasn’t an intellectual one. It was an overcoming of the emotional barrier that, in any civilized society, prevented people from doing damage to each other. She knew that because, hours earlier, she had done it. During that shocking initial combat between the Seven and the Diggers, she had stepped in to protect Ty after Ariane had shot him, and the old Digger had struck her on the arm with the Srap Tasmaner, bruising the bone, and something about that intense physical contact had pushed her through the barrier, made it easy to aim her katapult at the man and fire it. Since then, well-meaning members of the group had approached her to offer their sympathies. All they’d wanted to talk about was Doc and Memmie, and what a shock it must have been for Kath to lose them so suddenly. Implicit was that Kath had gone epi because of their deaths. A reasonable-seeming assumption. But wrong. It had happened, rather, in the moment when the old man had attacked her and she had fought back. Doc, at the time, had still been alive, and Memmie, though mortally wounded, had still been breathing. So Kath Two had actually been the first member of the Seven to die.