Iteration

Abstraction is a concept familiar to programmers, and a term in common use. Abstraction is often discussed as a quality of code, but it can also describe a process of technology changing in a particular way over time. Gilbert Simondon, among others, offers the term concretization to describe a kind of anti-parallel process where technology components become more specific and effective over time, as designs evolve.

That introduction is pretty abstract. Examples can be seen in the changing design of loops.

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