Answer:
Because people are too busy with doing the same thing that it shows that they are incapable or afraid of change.
Explanation:
Montag gets on the subway and starts reading the Bible, because he wants to memorize some lines from it. However, he is being constantly distracted and interrupted by an advertisement for Denham's Dentrifice toothpaste, as its jingle is played over and over again on the subway. He gets really mad because of it and starts screaming and yelling, before he leaves at the next stop.
The Stage Manager overlaps past and future when he describes the Gibbs:
"Doc Gibbs died in 1930." (future) Then he says: "Mrs. Gibbs died first--long time ago, in fact." (past).
The second example is when he talks about the cornerstone they're putting in the bank so that people "a thousand years from now" can find it. He discusses the ancient Babylonians and then the people of a thousand years from the present.
