When solving an engineering problem, how can we be reasonably sure that we have created the best solution possible? what is the evidence?

Adog whistle manufacturer's factory was located near a residential area. the manufacturer used the most effective methods for testing its whistles, but it was impossible to completely soundproof the testing area. a breeder of champion show dogs bought some property near the factory and raised and trained her dogs there. although the whistles were too high-pitched to be perceived by human ears, they could be heard by the breeder's dogs. consequently, the dogs often were in a constant state of agitation. in a suit by the breeder against the manufacturer, what is the likely outcome? response - correct a the breeder will prevail on a trespass theory, because the sound waves are entering onto the breeder's property. b the breeder will prevail on a nuisance theory, because the sound of the whistles is a substantial interference with the breeder's use of her land. c the breeder will not prevail, because the sound of the whistles is not a substantial interference with the breeder's use of her land. d the breeder will not prevail, because the manufacturer has acted reasonably in testing its whistles.

In order to take advantage of the high quality talent pool, ernst & young sets up operations in the philippines and moves part of its tax services to its new facility. identify this strategy.

What is the opportunity cost (in civilian output) of a defense buildup that raises military spending from 4.4 to 4.9 percent of a $7 trillion economy?