The Remedy That Is Also a Poison

The idea in plain words

The Greek word pharmakon means both medicine and poison. The same substance cures at one dose and kills at another, helps one patient and harms the next. Philosophers have used the word to describe technology: every tool that extends what we can do also changes us, often by weakening the ability it replaces. A calculator makes arithmetic easy and mental arithmetic rare. A map app makes getting lost almost impossible, and with it the habit of knowing where you are.

The idea is not that technology is bad. It is that technology is never neutral and never simply good. It comes with a dose, side effects and a question of who prescribes it.

Where it comes from

The founding text is a story Socrates tells in Plato’s Phaedrus, written around 370 BCE. The Egyptian god Theuth, inventor of numbers, geometry and letters, presents his inventions to King Thamus. Of writing he says it will make the Egyptians wiser and improve their memory: it is a pharmakon for memory and wisdom. Thamus replies that the inventor is not the best judge of his invention. Writing, he says, will produce forgetfulness, because people will rely on external marks instead of remembering from within. It is a pharmakon not for memory but for reminding. And it will give people the appearance of wisdom without the reality: they will have read many things without being taught, and will seem knowledgeable while knowing little.

The irony, which Plato surely intended, is that we know this argument against writing only because Plato wrote it down.

In 1968 the French philosopher Jacques Derrida wrote a long essay, “Plato’s Pharmacy”, on the double meaning. Translators, he noted, had to choose between “remedy” and “poison” when rendering pharmakon, and the choice hid the point: the word means both, undecidably. Writing is a supplement that both helps and replaces memory. Derrida used this to question the whole tradition of treating speech as authentic and writing as a degraded copy.

Bernard Stiegler, a later French philosopher, made the idea central to a philosophy of technology. Every technical object, he argued, is a pharmakon: it can extend human capacities or short-circuit them, and which happens depends on how it is designed and used. He was especially concerned with media and digital technologies that capture attention, arguing that they could produce a loss of knowledge and of the capacity for sustained thought, unless societies developed practices of care around them.

What it does to the mind

Tools reorganise mental effort. When a capacity is outsourced, the brain invests less in it, and the skill fades. Walter Ong, in Orality and Literacy (1982), described how writing changed thought itself, making possible analysis, lists and abstraction that oral cultures did not need, while weakening the vast memories and formulaic skills that oral cultures cultivated. Something was gained and something lost.

Users rarely notice the loss, because the tool fills the gap. The loss becomes visible only when the tool is taken away, or when a situation demands the faded skill. By then the trade has long been made, usually without anyone deciding to make it.

Where it shows up

The note-taking essay opens its philosophy with this idea: notes that remember for us may also stop us remembering. The word processors essay asks who loses the skill when the machine gains it, especially as AI begins to write. The social media essay describes a technology of connection whose dose and design shaped whether it connected or isolated. Melvin Kranzberg’s first law, quoted on this site’s home page, states the same insight in modern terms: technology is neither good nor bad, nor is it neutral.

What it asks of someone deciding

Ask the pharmakon question at design time: what does this feature do for the user, and what does it let them stop doing? Some losses are welcome. Others are not, and users deserve to know.

Think about dose. Many products are helpful in moderation and harmful in excess. Design that respects the dose, through limits, defaults or friction in the right places, treats users as patients rather than as targets.

Respect the objection. Every new medium has been accused of destroying something. The question is not whether there is a loss, since there always is, but whether it is understood, chosen and worth it.