Not unlike physical capital, knowledge capital also depreciates. Technological knowledge, like all knowledge, can thus be accumulated (learned) but equally lost (un‐learned).The underlying reasons for, as well as the rates of, knowledge depreciation hold important implications for innovation policy. The relevance of knowledge depreciation for the knowledge basis of innovation is straightforward.
And yet it is often ignored in analysis that unduly focuses on knowledge creation rather than on an integrated perspective that also includes the negative side of the knowledge equation. The topic of knowledge depreciation is thus under‐researched, with no single review paper available in the literature. The explicit treatment of energy technologies within the context of knowledge depreciation is even more patchy and hence motivates this case study which reviews a (very limited) research field.
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