In nature there are many biological mechanisms of self-reproducing or multiplying types of bacteria, viruses of different types, etc. However, in most cases, these mechanisms can not cross a certain predetermined area of their activity, eg the barriers of animate and inanimate world, in a word, bacteria can not multiply by downloading, for example, steel particles or other alloys or metals. However, what would happen if there were such reproductive units for which there would be no barriers and they would be able to take in all the elements of the environment endlessly by eating them and transforming them into their own mass. It would have the character of an unprecedented catastrophe until the entire planet was assimilated.