What Is a Blockchain Fork?

From fool.com

A blockchain fork is like a fork in the road for a cryptocurrency project. This is what happens when the community of developers behind an open-source blockchain system comes up with new ideas and wants to tweak the code. Many cryptocurrencies were started this way. So, let's take a look at what blockchain forks are, how they work, and why they matter to cryptocurrency investors. What is a blockchain fork? A blockchain is a publicly available ledger of transactions. Each block of information contains a large number of transactions, along with links to the previous and subsequent data blocks. Anybody can read this ... (full story)