Tutorial: confusing paragraph in section 8

[ianb]

In section 8 ("Ownership") there is:

If an object doesn't contain any non-Send types, it consists of a single ownership tree and is itself given the Send trait which allows it to be sent between tasks. Custom destructors can only be implemented directly on types that are Send, but non-Send types can still contain types with custom destructors. Example of types which are not Send are Gc and Rc, the shared-ownership types.

This uses a bunch of terms and ideas that haven't been introduced at that stage of the tutorial.

[huonw]

cc @steveklabnik

[steveklabnik]

I agree. However, given that I'm currently re-writing it, I don't want to put in a ton of effort to fix this here. I'd love a simple patch to fix this... maybe just link to the other parts where this has been talked about?

[ianb]

I myself don't understand enough yet to suggest a correction or simplification.

[steveklabnik]

No worries. Thanks for raising the issue.

[steveklabnik]

#15745 should have fixed this, or at least, as much as it's getting fixed, given the tutorial's impending death.