We need also to recognize that there are two types of technology in the planet earth. Human and non-human technology. Is widely accepted that some species other

We need also to recognize that there are two types of technology in the planet earth. Human and non-human technology. Is widely accepted that some species other than Homo sapiens developed technology. Many of this animals are in the family hominidae but we could expand the definition to cover other examples. A beehive for example could be accepted as bee technology. It has a well defined purpose, implies several examples of material design and manipulation and can't be created just by geological or magnetical forces. Bees evolved beehives to keep protected and warm in winter. We evolved clothes, buildings and bonfires. Is not really different. Moreover, the acari that is riding that honeybee to move far than its range is not really different than us learning how to ride a horse for the same purpose. We adopted and replicated a lot of animal technology (like making paper) but not all. We still don't dominate the technology to make a clam shell from scratch for example. Identifying extraterrestrial technology in the planet could be much more difficult. We need to separate it from non human technology first and could be much more subtle than the festival of ligths and steel that we see in the films but could be also "very alien". Until data most if not all of the "extraterrestrial" signs were found to have a perfectly normal terrestrial explanation.