c5eb2b51_Than_a_Roomba____IEEE_Spectrum__ROOMBA
[SLIME MOLD] Slime mold can design a transportation network. In two different experiments, it re-created massive transit systems in miniature. Researchers set out tasty treats to represent population centers, and slime mold spread out to find them, duplicating the Tokyo rail system and the Canadian highway system. [ROOMBA] 
Roomba can’t compete at urban planning, but it can identify particularly gritty spots on a floor to do some focused cleaning.
Is Slime Mold Smarter Than a Roomba? - IEEE Spectrum
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