The MakerLegoBot is a Lego Mindstorms-based 3D printer that automatically picks and snaps down pieces as it goes to turn software descriptions into completed Lego builds:
Naturally the next step is to devise a MakerLegoBot capable of building other MakerLegoBots. I for one welcome our new Lego overlords.
Ah, a von Neumann machine made out of Legos.
Anybody reminded of the ‘Replicators’ from Stargate SG-1?
I was thinking of Heinlein’s Waldoes building Waldoes — although I only know the story second-hand. I suppose I should read the original.