On the technical, coding side there is a lot of people who were capable of creating a system like Bitcoin, as evidenced by the amount of altcoins that are now created.
There are many teams that can create systems like Bitcoin, but they innovate based on the code and logic of Bitcoin. If Bitcoin has not been created in this world, how many people have the ability to create a system like Bitcoin? What Satoshi achieves is the creation from zero to one, and we are copying from one to one on the basis of what he has created. At the same time, we will carry out certain functional innovations based on Bitcoin, but no one can change the underlying architecture of the blockchain.
However, Satoshi didn't only have to code the whole thing, he had to think of the idea, and try to use hindsight on predicting what the world would look like in 10, 20 years, and beyond.
This is where Satoshi is great. It did not create Bitcoin for him to run for five, 10 or 20 years, but for Bitcoin to run for 50, 100, or even 500 years. Today, the Bitcoin network has been running for 12 years, but it still operates according to the architecture designed by Satoshi Nakamoto at the beginning. We are now at most improving some code or functional details, but we can't completely change the underlying architecture of Bitcoin.
He had to come up with an idea, and solution on how to keep Bitcoin having a constant injection into the economy, while not releasing too much too early.
This is the wisdom contained in the Bitcoin economic model. Bitcoin's release rules are the core of Bitcoin's entire economic model. It is organically combined with the mining power of the miners. Adjust the difficulty of Bitcoin mining through the change of computing power. Just as the Chinese government banned mining this time, the computing power was drastically reduced. In response to this change, the difficulty of Bitcoin mining has also been adjusted in accordance with the rules. This allows the Bitcoin network to continue to operate stably. It is this intelligent design that allows Bitcoin, the economy to continue to grow, grow, and operate stably.
He also had to come up with a way of securing the transactions, and this is probably the most impressive part of the whole thing. Implementing something which prevents double spending, isn't something that a lot of people could do, well at least thinking of the solution, and then implementing it.
Yes, security is the fundamental guarantee for the stable operation of the Bitcoin network, especially Satoshi has solved the double spending problem as a genius. From now on, no one can attack or hack the Bitcoin network. Bitcoin is still operating stably according to the architecture it designed at the beginning. In my opinion, this is a miracle. When Bitcoin was created, it was a nearly perfect work. The perfection I am talking about here is not the perfection of its details. It is the perfection of its overall structure and the perfection of its underlying logic.
There are definite short comings of Bitcoin, and whether Satoshi was aware of that, and was going to address them later remains to be seen. However, its most likely that he hadn't come up with solutions to some of the issues that exist in Bitcoin today, and was possibly hoping for others to contribute, and come up with solutions, which you could partly argue happened.
Yes, Bitcoin still has many shortcomings. But this does not affect its overall stability. Satoshi has completed his mission, and he has fully presented Bitcoin before us. The rest is the work we need to do as Bitcoin participants. On the basis of Satoshi's work, we have further improved the Bitcoin system and practiced the thought of Bitcoin. I have always regarded the thought represented by Bitcoin as the most important part. Bitcoin does not only represent a technology, the most important thing is its philosophy and ideas.