We need new metaphors that put life at the centre of biology | Aeon Essays

Favored metaphors change over time, but—and this is less often appreciated—that does not simply mean that one supplants the other. The concept of “vitalism” might be traced back to the Aristotelian soul and is generally regarded as obsolete in biology today, but in fact we’ll see that it still survives in cryptic forms, most particularly in the way

One of the fundamental messages of this book is that we cannot properly understand how life works through analogies or metaphorical comparison with any technology that humans have ever invented (so far). Such analogies may provide a foothold for our understanding, but in the end they will fall short, and will constrain and even mislead us if we don

So long as we insist that cells are computers and genes are their code, that proteins are machines and organelles are factories, the picture that emerges is a clumsy marriage of the mechanical and the anthropomorphic. Life becomes an informational process sprinkled with invisible magic.

Arguably it is here that we begin to see how life is not a mechanical process that transmits information and organization steadily and predictably along linear pathways from genes to ever increasing scales. Instead it is a cascade of processes, each with a distinct integrity and autonomy, the logic of which has no parallel outside the living world.