That and the Tokyo train network slime mold experiments have always irrationally angered me.

They haven't found the most efficient paths, for humans in the real world, at all. They've found short-ISH paths that are efficient for a slime mold attempting to conserve energy.

Just look at the god damned photo!

What the hell is wrong with people?

Do they honestly believe that building an interstate highway along the actual, literal, spine of the Rocky Mountains, practically from peak-to-peak along the most mountainous and difficult terrain in North America, is "efficient"?

Slime molds are not intelligent.

Slime molds cannot make decisions.

Slime molds do not hold any insight into the human condition, especially when it comes to engineering.

Slime molds are simple biological machines who have been selected over billions, yes billions, of years to grow in the most sustainable way possible.

And don't get me started on the Tokyo railway one. Only the highest of the most stoned biology students could look at that picture and say, "this resembles what humans built". It's like looking at a cartoon rendering of a stereotypical Saguaro cactus and saying, "this looks like a man holding his arms up just put a cowboy hat on him and call him Tex".