"externality" is a correct word in written English.
It is used to refer to the unintended consequences of an action that affects someone who is not directly involved in the action. For example, a factory releasing pollution into the atmosphere could be considered an externality, as the people living near the factory are affected by the consequences, even though they are not the ones who are running the factory.
What Derrida says here defines a general project which consists in trying to conceive the relation between machine-like repeatability and irreplaceable singularity neither as a relation of externality (external as in Descartes's two substance or as in Platonism's two worlds) nor as a relation of homogeneity (any form of reductionism would suffice here to elucidate a homogeneous relation).
Descartes' strategy for proving an external material world has two main parts: first, he argues for the externality of the causes of sensation; second, he argues for the materiality of these external causes.
Also, merely identifying a negative externality is not enough to demand putting an end to its causes; sometimes it has to be accepted as a trade-off for the gains from marketisation.
The externality-confronting social investment welfare state certainly faces dilemmas over when more is to be gained from accepting an externality than from eliminating it; and politics will usually determine the outcome.
Just as one individual can inflict an externality on another, so one side of a person's nature can inflict an "internality" on another.
Which means that the demand for the buildings which a developer might put up in a neighbourhood is to a great extent a positive externality generated by the existing neighbourhood.
The decision to ignore carbon content, when aggregated over the whole of humanity, generates huge carbon dioxide emissions and rising global temperatures.The economic solution is to tax the externality so that the social cost of carbon is reflected in the individual consumer's decision.
They make brands less exclusive or more expensive.But it is possible that buying genuine luxuries imposes an externality of its own.
But the externality count was surely different there.
