Joss Whedon said this quote
“ I am not a fan of referencing your own work when it's in a different universe than what you're doing. That, to me, is a wink at the audience, and winking isn't actually cool when you're not, like, 10. ”
“ I am not a fan of referencing your own work when it's in a different universe than what you're doing. That, to me, is a wink at the audience, and winking isn't actually cool when you're not, like, 10. ”