The article describes a study on how money affects trading in economies. Traders make decisions based on what they need to buy things, and they follow simple strategies in a fast-paced market. The bank makes money, which is given to private shareholders, but they can only use it later. When there is enough money in the system, trades move towards the best outcomes for everyone. Money is valuable in most trades, but at the best outcome, it's just a placeholder. In most cases, there is only one best way for trades and prices to move, both in real and money terms. In the short term, money doesn't change much, but in the long term, it can have a big impact on trading.