International Mindness: To test a product in an environment, the need for the product has to be highly considered. For example, if a product is used more often in one environment, then this environment should be tested more than another. Also, for the designers, if the problem being solved is foreign, testing in this environment is especially important.
Purpose of Strategy Choice: By including potential consumers in the testing of designs and prototypes, designers gain valuable data relating to how they will interact with a product.