But, more likely, this range was the maximum obtainable with given technology and design constraints.

FORBES: Game Changer for Tesla

They simply have design constraints that need to be acknowledged and respected.

FORBES: Part Two: Creating Brands for the Future

As with Dr Echt's design, power constraints mean that this approach can be used only for pacing.

ECONOMIST: Case history

The answer is that employees and enterprises are not able to use existing sharing technologies in part because of the software design and usage constraints, in part because the systems are not suited to the extended enterprise that many people now work in.

FORBES: Microsoft's SharePoint Social Business Strategy Will Sell But It Will Not Be Sweet

Theories range from design faults and construction errors to a rush to finish the job and budget constraints.

ECONOMIST: The aftershocks from a collapsed airport terminal