If bacteria are community-forming organisms, then what can humans learn from bacterias, so that humanity acts as one organism?

Like blue-greens capture energy to make food, humans (can) capture creative energy to make ideas and projects that shape our culture.

What environment bacterias need? And humans?

Then, like waste is food, ideas are food.

Also, if each body part has different (stable) populations of bacterias, how does that apply to a human-made world run by human creativity?