"The thing is, Will," I said, "this design can shape-shift. Not quickly yet, but we’ll keep improving it. There’s no built-in discrete structure as such. Every ant unit is capable of doing any required task by reconfiguring itself. Everything from the SCUT transceiver to the SURGE drive is built from cooperating units. Skeletal structures are generated by units locking themselves together with double bonds. And so on. The computer core is distributed throughout the structure, as is the power core. There’s no Achilles’ Heel, no weak spot. That’s a lot of power for a post-human replicant."