Main idea

A card written by hand on paper does something other than the same sentence typed into an application. Paper slows you down, it forces you to write, it gives the idea a physical presence; the card becomes manageable, visible, almost bodily. It is that cost and that materiality that take part in the anchoring.

Digital holds another role: it mirrors. It lets you find the cards, consult them, possibly connect them to a note or a source. That role is useful and it is secondary.

Its risk is its own. A digital tool spontaneously offers what a note base offers — search, links, tags, fields, hierarchy. If it takes over that whole logic, the card becomes an atomic note all over again and loses its function: it is no longer what you want to hold within you, it is what you can retrieve.

Why it matters

It gives a criterion for choosing a tool: not what it allows, but what it prevents. A poor medium protects the function; a rich medium dissolves it by offering the base's equipment.

And it explains a frequent failure of digital decks: they do not lack features, they have too many, and the card aligns itself with the tool.

Nuances and limits

Paper has its costs: it cannot be searched, it gets lost, it does not travel with you, and it makes rereading dependent on a place.

And the property that matters is the gesture of writing and the handling, not the fibre: a deliberately impoverished digital medium can hold part of it.

Open questions

• What functions can a digital mirror offer before it starts turning the card into a note?