> Why could it not be a planet filled with brainless jellyfish and green algae? It could be even worse. Maybe we're not finding "life" because the only thing w

> Why could it not be a planet filled with brainless jellyfish and green algae? It could be even worse. Maybe we're not finding "life" because the only thing we have to compare to is life on Earth. Maybe there is life at different physical / time scales that we completely miss. Maybe what we call life, and specially intelligent life, is nothing special at all. I find amusing that the general expectation is to find slightly different humans, with civilizations and communication and interstellar ships.