I was always puzzled that scientists defined those 3 types of species because we haven't notice anything but our type. It's like defining different types of chimera or unicorns O_0'
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I was always puzzled that scientists defined those 3 types of species because we haven't notice anything but our type. It's like defining different types of chimera or unicorns O_0'
They are more of a philosophical hypothesis then one grounded in data. The assumptions are purely based on the power requirements needed to facilitate interstellar communications and travel. Based on our own developments at least type 1 and type 2 are certainly plausible.