The Practice Effect by David Brin

In a world where objects improve with use rather than deteriorate, a scientist named Dennis Nuel finds himself navigating a society that operates on the principle of the "practice effect." As he becomes embroiled in the local politics and power struggles of this alternate reality, Dennis must adapt to the unique challenges posed by this phenomenon. His journey involves understanding the implications of a world where practice and repetition can transform tools and weapons into more effective versions, ultimately leading to a deeper exploration of innovation, adaptation, and the nature of progress.