Could you infer intelligent life? Here is a theory of brains that says yes because it basically says that brains, and intelligence like ours, is inevitable if life exists long enough. What will not be known are some of the exact details of what are called the Psi functions.

There are several articles but here are two to explain that theory at some level. They both discuss the same theory, driven by findings in the science of truth and lies and the inevitability on another planet showing your noted signs of life with an assumption of DNA (or similar) and evolutionary 'common sense'

https://medium.com/liecatcher/how-your-brain-computes-41ebe7428ff9

https://medium.com/liecatcher/a-noise-model-for-why-we-sleep-and-lie-too-69bf723b3ba9

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Robert Thibadeau

Robert Thibadeau

Carnegie Mellon University since 1979 — Cognitive Science, AI, Machine Learning, one of the founding Directors of the Robotics Institute. rht@brightplaza.com