amounts describe digital assets. An amount has two parts: the
brand and the
extent. From the brand you learn the kind of digital asset, and from the extent you learn "how much" or "how many". For example, in the phrase "5 bucks", "bucks" takes the role of the brand and the extent is 5. Amounts can describe fungible and non-fungible digital assets. Amounts are pass-by-copy and can be made by and sent to anyone.