`T: 'static` means that values of the type `T` own all their data (more specifically, their lifetime is not constrained by the lifetime of anything they referen

`T: 'static` means that values of the type `T` own all their data (more specifically, their lifetime is not constrained by the lifetime of anything they reference). `&'static T` is a reference to something that lives as long as the program (static data or leaked memory).