Value is more than a price tag
Value may lie in an object, a service, time, information, safety or a promise of something in return later. A person gives up something they control when what they receive seems more useful at that moment. The same thing can therefore be valued differently by two people, and its significance can change with place, time and circumstance.
Exchange need not be an immediate trade between strangers. A family or small community may rely on gifts, mutual help or informal debt. A complex society, however, must record many relationships among people who do not know each other. Units of account, obligations and widely accepted means of payment then become increasingly useful.
Specialisation creates a coordination problem
When one person grows food, another repairs equipment and a third transports goods, each can become more productive at their task. They also become more dependent on other people's work. Exchange distributes the gains from specialisation and lets a producer receive value that can later meet a different need.
Direct exchange faces the double coincidence of wants: a baker must find someone who wants bread and offers exactly what the baker wants. A more widely accepted commodity or record splits the exchange into two steps. The baker accepts it now and spends it with somebody else later.
- specialisation raises productivity as well as interdependence
- a common unit makes offers easier to compare
- a means of payment separates today's sale from a later purchase
Barter is not the whole origin story
The textbook barter example explains a real drawback of direct exchange, but evidence does not show that every economy passed through the same age of universal barter. Anthropological work also describes gifts, debt, redistribution and social accounting. What we now call money emerged through different routes in different places.
It is more accurate to say that money addresses recurring coordination problems: recording obligations, comparing dissimilar goods, transferring purchasing power and settling a payment between people without personal trust. A coin, banknote, bank deposit and Bitcoin answer those questions with different rules.
The connection to Bitcoin
Bitcoin is an attempt to enable digital value transfer without one central operator maintaining the sole master ledger. It does not remove the need for agreement: people must still accept the unit, software and network rules. It changes how ownership and the validity of a transfer can be checked.
Before evaluating Bitcoin, we therefore need to distinguish value, price, money, payment and credit. Without those concepts, discussion becomes a contest of slogans. The next article explains what counts as money in a modern economy.