According to dispensationalism, why will Satan follow what is written in Revelation? According to dispensationalists, many end times events are literally laid out in the book of Revelation. Specifically about the Anti-Christ and his motive. And we do know what is 666 and why it will be used for. So why should Satan follow the Bible to do everything mentioned in it? There is no need to follow the Bible and hence he acts against Jesus. Why should Satan follow the same number and same process? It is well written how Satan is going to fall. He should go for alternate way right? Like not using 666 or not revealing himself as a Anti-Christ or something?
My guess is, Satan knows God will do it, but doesn't know exactly HOW. I can tell you two examples:

1) Satan know about about Jesus passion, but he is unable to entirely stop it... Satan tries Jesus on desert 3 times, and "enter in Jude" to betray Jesus, start storms on sea, etc... Look at these verses:


  And there was in their synagogue a man with an unclean spirit; and he
  cried out, Saying, Let us alone; what have we to do with thee, thou
  Jesus of Nazareth? art thou come to destroy us? I know thee who thou
  art, the Holy One of God. (Mar 1:23-24)


The devil know about Jesus and the task of Jesus, but cannot do anything to stop it.

2) Look at this prophecy: 


  Then Elisha said, Hear ye the word of the LORD; Thus saith the LORD,
  Tomorrow about this time shall a measure of fine flour be sold for a
  shekel, and two measures of barley for a shekel, in the gate of
  Samaria. Then a lord on whose hand the king leaned answered the man of
  God, and said, Behold, if the LORD would make windows in heaven, might
  this thing be? And he said, Behold, thou shalt see it with thine eyes,
  but shalt not eat thereof. (2Kings 7:1-2)


and finally:


  And the people went out, and spoiled the tents of the Syrians. So a
  measure of fine flour was sold for a shekel, and two measures of
  barley for a shekel, according to the word of the LORD. And the king
  appointed the lord on whose hand he leaned to have the charge of the
  gate: and the people trode upon him in the gate, and he died, as the
  man of God had said, who spake when the king came down to him. (2Rs
  7:16-17)


How interesting! The lord on whose hand the king leaned knows about the prophecy, and it happened in the next day, and he cannot avoid it at all. So, probably will be something like that.