Yeah, this was my assumption when I read the original comment, so I was confused about what it was saying (I thought it was suggesting you should pass reference

Yeah, this was my assumption when I read the original comment, so I was confused about what it was saying (I thought it was suggesting you should pass references instead of doing a bitwise-copy most of the time, which is just plausible enough that I believed it for a minute) until I read further down in the thread and realized they meant implicit heap-cloning