It is unreasonable but it is effective and for how long it has been in our civilization, I think that we will have a hard time uprooting this system because it's coupled already with the global economy and global supply chain and what happens when we take away a keystone to those things, it will eventually collapse, it's a parasite that we can't remove.
Not exactly effective. Most of our world chases money, and neglects more important factors. I like the saying that we work to live, and not live to work. However, the reality is most people live to get money, and then they don't even enjoy it when they get it, because by the time they've amounted any sort of substantial earnings, they are on their death bed.
The system is designed to keep the poor, well poor, and contributing to the wealthy companies that pretty much rule the world. So, no the current money system makes no sense, yet people contribute to its survival every day.
Unless by effective you mean keeping those that control things rich, then yeah its pretty effective at that. However, what is clear is there are far more people unhappy with the current implementation of our concept of money, than there is supporters of it.
From the birth of Bitcoin to the present, the impact it has brought to us is extremely significant, especially the contribution of the entire system to the world.
Consensus is of course not a new concept. Consensus already exists in human group life. This is very common in our daily lives and it is also a very precious thing. There is a sense of unity in the group, so that the consensus reached by members is Equally valuable.
Consensus was originally a concept of social operations, but now it is an important part of computer science for us.
In the distributed ledger, the consensus mechanism is that most members agree on the value of the proposed transaction and update the ledger.