Jujutsu has been the tool that actually got me into making full use of version control software. Before, through multiple attempts at grasping at the deeper fundamentals, I only learned the bare minimum git commands I needed to make commits and branches, and very careful merges. Jujutsu maps to a much clearer and simpler mental model. Blockchains are nifty and all, but awfully inconvenient to work with as meatbags.