There simply may not be enough time or consensus.

FORBES: Obama And Republicans Race Against The Clock In Tax Deal

Furthermore, since there are usually a small number of shares being sold, even if you are allocated stock in an IPO, the actual size of your holdings may not be large enough to justify the time and effort.

FORBES: IPO Demand Starting To Heat Up

If it's clear that there's not enough green to cover payroll, it may be time to delay payment of certain bills.

FORBES: Your Free Online Accountant

It may not be enough for governments to attack cartels one industry at a time.

ECONOMIST: Antitrust in Asia

Initially coverage may be a problem and, if people are commuting, they may not be stationary for long enough to enjoy an entire episode at one time.

BBC: NEWS | Technology | Mobiles look to entertain you