Which of the following precedes the other: Sam&Dean's life or Chuck's writing?
According to Wikipedia's entry on prophets: In Christianity "It is often associated with predicting future events, but in Biblical terms it is wider and can include those given the power to preach repentance to those who do not want to hear the message and to warn of God's wrath for disobedience." (emphasis mine) Now focusing on the emphasized phrase (because the second part isn't really relevant here), that would indicate Chuck's writing predicts Sam&Dean's actions.
Therefore: If Becky ~*persuades*~ (take that as you will) Chuck to write about Wincest, then it will occur.
Hush, all of you, my logic is impeccable.
According to Wikipedia's entry on prophets: In Christianity "It is often associated with predicting future events, but in Biblical terms it is wider and can include those given the power to preach repentance to those who do not want to hear the message and to warn of God's wrath for disobedience." (emphasis mine) Now focusing on the emphasized phrase (because the second part isn't really relevant here), that would indicate Chuck's writing predicts Sam&Dean's actions.
Therefore: If Becky ~*persuades*~ (take that as you will) Chuck to write about Wincest, then it will occur.
Hush, all of you, my logic is impeccable.