Making multiple computers all store the same thing is hard because they have to send messages between each other, and sometimes messages get lost.
Other people have tried to write down how they solved this problem, but their explanations were hard for adults to understand.
This person has tried a new way to solve this problem, and a new way to explain their solution that uses ideas that many big kids who go to big kid school to study computers can understand.
Making multiple computers all store the same thing is hard because they have to send messages between each other, and sometimes messages get lost.
Other people have tried to write down how they solved this problem, but their explanations were hard for adults to understand.
This person has tried a new way to solve this problem, and a new way to explain their solution that uses ideas that many big kids who go to big kid school to study computers can understand.