"We can only see 1% of the luminesce matter that exists in the 3-dimensional universe, the rest 99%, arguably much more, is dark matter. So look at the diversity of life in this 3rd dimension we live in, and see the diversity of life in our narrow bandwidth. Then you can imagine, maybe that 99% of that non luminescent matter, may hold a myriad of beings , entities, and species. What if they evolved many races of far-reaching super intelligent beings, at supremely intelligent stages of Evolution, far surpassing ours. Not that easy really is it??.