Fungibility
In economics and law, fungibility is the property of a good or a commodity whose individual units are essentially interchangeable.Packaged products on a retail shelf may be considered fungible if they are of the same type and equivalent in function and form.However, after a major breach in Japanese exchange Coincheck, token developers for cryptocurrency NEM added a special flag to hacked coins to indicate they are not to be traded or used.Oxford University theoretical physicist David Deutsch has adopted the term "fungible" to describe the physical nature of quantum particles and universes within the quantum multiverse, where, by virtue of being identical in all respects, different particles chaotically divide or combine as a result of physical interactions from a common fungible fund in superposition.[9] Depending on whether the interests of the aggrieved party are fungible, a determination made by the trier of fact, the appropriate remedy may change.[10] Belgium has adopted fungibility for its domestic central securities depository, CIK (Euroclear), which was set up in 1967–1968.