Quantum mechanics and chaos theory constrain our predictive ability.

He said current Securities and Exchange Commission regulations constrained the company's ability to manage expectations more closely.

Senators make $136,700 a year, and conflict-of-interest rules constrain their ability to earn outside income.

The debt "has constrained the company's ability to fund long-term development and reduced its financial flexibility," Saatchi said in a letter to shareholders.

A lack of support from Turkey for the 1996 Iraq no-fly zone ultimately constrained the coalition's ability to effectively enforce it.

They don't want to say anything that constrains their ability to act in the future.

He added, however, that there were "some complex planning, legal and constitutional issues that may constrain our ability to develop a zoning solution."

But American officials say that this would unduly constrain the alliance's ability to mobilize against an attack.

Science doesn't constrain your ability to express yourself, it just teaches you ways to be very clear and unambiguous about it.

"That principle has special resonance when the government seeks to constrain a person's ability to speak there."