This makes the proposal impractical economically and it increases the risk of at least one or more launch failures.

The plaintiffs are arguing that if a defendant can avoid all liability by modifying its behavior once a suit is filed, citizen suits will become economically impractical.

In 1916, the U.S. Army Corps of Engineers revisited the idea of a commercial harbor, but declared it economically impractical.

These ethanol-only vehicles were very popular in the 1980s, but became economically impractical when oil prices fell - and sugar prices rose - late in that decade.

That pricing strategy, the suit charges, has made it "economically impractical for manufacturers to offer competing office productivity suites for preinstallation on their PC's."

The developer's lawyer, Daniel E. Horgan, called the suggested changes "economically impractical."

Maintaining eroding beaches with artificial infusions of sand is difficult and costly, and as sea levels rise, it may become economically impractical or even impossible.

Mr. Gorbachev argues that independence would be politically risky and economically impractical.

I wondered how long it would be before the automated looms of the Japanese made that economically impractical.

The store had claimed that it was economically impractical for it to keep open on Saturday nights and until 10 a.m. on Sundays.