Respecto al nivel de conocimiento de los actores respecto de la franquicia en la que participan, es tan sencillo como que no si no sabes, no abras la...
Bottom line is, even if you see 'em coming, you're not ready
for the big moments.No one asks for their life to change, not really. But it
does.So what are we, helpless? Puppets? No. The big moments are
gonna come. You can't help that. It's what you do afterwards that
counts. That's when you find out who you are. You'll see what I mean.
Whistler (Buffy The Vampire Slayer - 2x21 Becoming, Part One - Joss Whedon)