WASHINGTON (AP) — The dealmakers who warn that a year-end plunge off the “fiscal cliff” would be disastrous don’t seem to be rushing to stop it. Why aren’t they panicking?

For one thing, the Dec. 31 deadline is more flexible than it sounds. Like all skilled procrastinators, from kids putting off homework to taxpayers who file late, Washington negotiators know they can finagle more time if they need it.