In the time you go to cast a film, you're a prisoner of whoever happens to be the most famous person of the right age during that six-month window.
And if you want to try to reach into the past or the future beyond that six-month window, it's very difficult.
Indeed, those who don't enroll in a drug plan during the six-month open window are often rejected later.
There's a six-month window before the turf-protectors and the forces of inertia in Washington will destroy their ability to succeed.
New Jersey, for example, said it would take advantage of a six-month "window" before dropping any current recipients.
"You've got a six-month window of opportunity to assist them in putting in place a system that reflects democratic processes in a free market economy," he added.
"There's about a six-month window before turf battles and the inertia of Washington will sink this," she said.
"During any six-month window, one could find cases where the Department of Justice had experienced setbacks, but overall, the department's record continues to be sensational."
Mr. Freedman said another tough moment could come for Connecticut when the first six-month window expires.
However, a minimum of two delivery months must be used to calculate the current price, even if the second contract is outside of the six-month window.