You aren't alone. Reference capabilities are the hardest thing for most folks to get a handle on, particularly as they relate to generics. We have a section of

You aren't alone. Reference capabilities are the hardest thing for most folks to get a handle on, particularly as they relate to generics. We have a section of the website on learning Pony that focuses on a "plan of action" for learning reference capabilities: https://www.ponylang.org/learn/#reference-capabilities https://www.ponylang.org/learn/#reference-capabilities