[kergonath]

> Nature is very efficient.

This is a meme and it is unfounded. In most cases, nature is good enough.

[pas]

efficient at what? what's the measure, utility function, what are nature's KPIs? :)

utilizing energy gradients? maybe, but there's plenty of that on Mars yet it's barren. so probably certain ecosystems can be more or less efficient at this, right?