In his bookBlink: The Power of Thinking Without Thinking, Malcolm Gladwell suggests that formal marketing research, including focus groups, is not very valuable and effective because the people being asked to evaluate the product do not take enough time to thoroughly evaluate the product. As a result, it is more effective to just ask the test group's first impressions rather than asking for a long evaluation. Explain whether you agree or disagree with this concept. Cite research to support your position.