> It's really eye opening to see all the copies plainly represented in code and the lifetime checker is really good about highlighting where you should be makin

> It's really eye opening to see all the copies plainly represented in code and the lifetime checker is really good about highlighting where you should be making a copy vs sharing a reference. From a Rust POV (a useful one, even if you're using a higher-level language), when you use a garbage collector, technically everything is owned by the garbage collector, and merely borrowed by you. That's why in most languages you can get away with making shallow copies everywhere, even when Rust would tell you that a `.clone()` is in order.