In the era when blockchains were very popular, the most term relevant to blockchains was decentralization, and the fork came next.
Then what is a fork? In the simplest words, the forks are software updating for blockchains. Software updating is most common from the days when we owned our first computers to the days of owning smart phones. The Windows has been updated from Win95 to the current Win10, and the Snapchat versions have also been updated for countless times. But do you ever wonder why the concept of fork has never been heard before? Why is the software updating known as the fork in the world of blockchain?