Imagine many computer programs trying to use the same data at once. This can cause big problems, like mixing up important information. Linearizability helps keep everything in a clear, step-by-step order. Even when many programs run together, actions seem to happen one after another. Each computer action appears to finish instantly and completely. This idea helps programmers build very reliable computer systems.
Researchers Herlihy and Wing introduced this concept in 1987. They defined "atomic" operations, which are like unbreakable steps. It guarantees all actions can be put into a simple, correct timeline. If one task truly finished before another, that order must stay the same. Think of each action as having one exact moment when it officially happened. Special computer instructions help make these actions happen smoothly. This makes complex computer work much safer and easier to manage. Your apps can then run smoothly without any glitches.