> Changing the title to "hey you" is a ridiculous meaningless idea that does not relate in any way to "you can remove the word rust and nothing changes".

It totally relates. If you remove 'Rust' then you cannot decipher the title. Rust has a known packing scheme when using enums, which is significant when replacing that packing scheme with a creative alternative. 'Enum' alone does not. Again, the whole idea behind an enum construct is to make any implementation values opaque! Any values used in a particular implementation are implementation dependent. As explained before, if you keep the implementation you are talking about a secret then the words become no more useful than "hey you...". The starting point is central to the story about a performance optimization being gained. One must be able to understand what the starting point is in order to extract anything useful from learning about the destination.

> You fabricate this idea that I have some feeling about rust

Whatever do you mean? The bit about feelings was clearly in reference to the earlier comment that spoke to even earlier comments that had nothing to do with you. It's a big world out there. What makes you so sure it revolves around you?