Twelve submarines are going to be awfully difficult to man, even if we start now identifying those kids who hide in cupboards at pre-school and sign them up for a submariner career track.

If we’re just using subs for surveillance, then by virtue of Moore’s Law, these could well offer a viable alternative, particularly if deployed in schools (the swarming sort).

And who knows, by 2030, we could equip them with offensive weapons, too.

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