Geneticists Richard Gordon of the Gulf Specimen Marine Laboratory in Florida and Alexei Sharov of the National Institute on Aging in Baltimore have proposed, in a paper uploaded to the preprint server arXiv, that if the evolution of life follows Moore's Law, then it predates the existence of planet Earth.
Moore's Law, of course, famously suggests that the complexity of computers grows at a rate of double the transistors per circuit every two years, resulting in exponential growth. Looking at the complexity of computers today and working Moore's Law backwards shows that the first microchips came about during the 1960s, which is when they were actually invented. In their paper, Gordon and Sharov take the same approach, only they apply it to biological complexity. The two researchers acknowledge their ideas are more of a "thought exercise" than a theory proposal, but at the same time suggest their calculations ought to be taken seriously. They start with the idea of genetic complexity doubling every 376 million years—working backwards, they say, means that life first came about almost 10 billion years ago, which of course predates the creation of Earth itself. Most scientists agree the Earth formed just 4.5 billion years ago. Assuming that Moore's Law does apply to biological complexity, this would suggest that life began somewhere other than on Earth and migrated here.
phys.org
