The experiences of the atomic scientists clearly show the need to takepersonal responsibility, the danger that things will move too fast, andthe way in which a process can take on a life of its own. We can, as theydid, create insurmountable problems in almost no time flat. We mustdo more thinking up front if we are not to be similarly surprised andshocked by the consequences of our inventions.

in hishistory of such ideas, Darwin Among the Machines, George Dysonwarns: “In the game of life and evolution there are three players at thetable: human beings, nature, and machines. I am firmly on the side ofnature. But nature, I suspect, is on the side of the machines.”

But in the new full-blown capitalist version of evolution, where the drive for accumulation had no limits, life was no longer an end in itself, but a mere instrument for the propagation of DNA sequences—and so the very existence of play was something of a scandal.

In the meantime, the classification of viruses remains unclear. Tupanviruses seem to be dependent on their hosts for very little, and other viruses, according to one preprint, even encode ribosomal proteins. “The gap between cellular organisms and viruses is starting to close,” Deeg said.

If all giant viruses turn out to share translation-related genes that are unique to their group, then it would mean they had a large common ancestor, an ancient virus that diversified over time, and it would lend support to the idea that giant viruses started out big and constitute their own domain of life.

That mingling has sparked contentious debate among scientists about when and how giant viruses evolved. All of viral evolution is murky: Different groups of viruses likely had very different origins. Some may have been degenerate “escapees” from cellular genomes, while others descended directly from the primordial soup. “Still others have recombined and exchanged genes so many times in the course of evolution that we will never know where they originally came from,” Fischer said.

A series of energy revolutions—some natural, some technological—built upon one another to give us our rich, diverse biosphere.