"There are several explanations why the Cambrian explosion occurred...but the notion that viruses from extraterrestrial space are the main drivers - is uniquely presented here in this article. The authors believe this and use strong expressions, describing it as evidence-based, yet without any of the necessary evidence. As an excuse they point out to other previous unconventional ideas during history of science which turned out to be true later - this is the argument the authors use. They even find their idea “plausible” - but it is hard to follow their thinking in this respect. So this article is useful, calling for attention, and it is worth thinking about - yet the main statement about viruses, microbes and even animals which came to us from space, cannot be taken seriously."
Commentary to: Cause of Cambrian explosion - Terrestrial or cosmic? Steele, E.J. et al.
Karin Molling, Max Planck Institute Molecular Genetics, Berlin, Germany
https://www.sciencedirect.com/science/article/pii/S007961071...