##Where did the idea of money come from?

To answer this question, we must clarify three main points that contributed to the development of the concept of money.
The first point is that man is a mammal to which all the laws of biology and the strategies regulating the relationships of animals with each other apply.
The second point is that in nature, all animals have strategies that regulate their relationship and determine the mechanisms of dealing with each other. These strategies have been accessed over millions of years. Animals that do not follow a certain strategy will become extinct.
The success of the strategy means the stability of relations between members of the same faction . The most successful strategy for living people is the “one for one” strategy , an eye for an eye, or (Tell me, I will tell you). In the sciences of strategies, this strategy is called tit for tat .

I don't want to go into detail on this strategy in this post (I will do so in a separate post) but the one-to-one concept is very important to the survival of the organism.
Assuming that the canary bird was infected with a type of parasite that lives on its neck, and it cannot uproot it because of its inability to reach the location of the parasite behind its neck. This bird asks for the help of another bird, and if he helped him by uprooting the parasitic animal, he returned the favor and helped the second bird uproot the parasitic animal as well. If the canary bird does not follow the one-by-one strategy, everyone will die because of this parasitic animal, due to the impossibility of uprooting the parasitic animal without the help of another party.
return to this strategy in a different post because it is a very interesting topic, but let's go back to our original topic, which is money. where are you from?
Let's imagine the primitive man and the principle of "Tell me to tell you", and then suppose that the number of the herd or the community is so large that not everyone can remember who spoke to whom. Perhaps (Q) scratched the back of (pbuh), but (Q) does not need (p) to rub his back for him, and at the same time (Q) owes an animal (C) for an itch that (C) gave him a few days ago.
If the animal decides to break the promise and does not fulfill its promise, no one will help it next time (one by one), which will lead to the extinction of this animal from the community. Therefore, it is in everyone's interest to implement the strategy .
To bypass the problem of large numbers in the herd or society, small colored stones were invented, symbolizing that the owner of this room has the right to have someone scratch his back because he has scratched someone's back in the past. In return, this individual must give the colored room to someone who rubs his back so that that individual can spend it again with another animal. ( I owe you )
This is, in a very simplified way, the most important principles of financial dealing. Money means the colored room, and the colored room means that someone owes me a future itch that can be exchanged for other services of the same value as the itch.
After human development and the increase in food and service requirements, the methods of exchanging services increased. For example, I have a chicken that lays an egg and my neighbor has a cow that milks milk. We had an incentive to exchange products so that we both had eggs and milk (the concept of opportunity) and based on our strategic instinct (one for one) money was created to exchange goods and services between us.

I hope the post was useful. I tried to be as short as possible.