It’s both faster out of the box and uses much, much less memory—which also makes it faster. As I note in the summary at the bottom of the post, because it provides no value-level caching out of the box, it does a great deal less work than the `@computed` system, and is about as cheap as it can be. But that also means you have the flexibility to layer in value-level caching when that’s the right tradeoff: something which is notoriously difficult to do (especially to do correctly) in a `@computed`-style system.