ultimately: emergence from mathematical structures?

So, we are mathematical objects. Wooo

Good article, biology, and thus evolutionary development of organisms, is ultimately constrained by the physics of the environment in which that organism develops. If life emerges, or has emerged, on a different planet under different constraints, we shouldn’t expect that it should look or think like anything we’ve observed here on Earth.

It might be the case that stable propagation molecules like RNA/DNA are the only ways life can thrive anywhere but they need some water-like medium to mingle and spread, and maybe it’s the case that other places in our vicinity are too radioactive and dry over a long term to sustain such a permissive development.

I guess it still befuddles me why there’s no other sign of intelligent life, like their space debris, or satellite probes.