The high-tech parasites feeding off human hosts

Head lice, fleas and tapeworms have been humanity’s companions throughout our evolutionary history. Yet, the greatest parasite of the modern age is no blood-sucking invertebrate. It is sleek, glass-fronted and addictive by design. Its host? Every human on Earth with a wifi signal.

Far from being benign tools, smartphones parasitise our time, our attention and our personal information, all in the interests of technology companies and their advertisers.

In a new article in the Australasian Journal of Philosophy, we argue smartphones pose unique societal risks, which come into sharp focus when viewed through the lens of parasitism.

What’s a parasite?

Evolutionary biologists define a parasite as a species that benefits from a close relationship with another species – its host – while the host bears a cost.

The head louse, for example, is entirely dependent on our own species for its survival. They only eat human blood, and if they become dislodged from their host, they survive only briefly unless they are fortunate enough to fall onto another human scalp. In return for our blood, head lice give us nothing but a nasty itch; that’s the cost.

Smartphones have radically changed our lives. From navigating cities to managing chronic health diseases such as diabetes, these pocket-sized bits of tech make our lives easier. So much so that most...

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