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62 The PCB Magazine • January 2016 19. Recruiting and Interviewing Social networking in your technical field is important, as well as establishing visibility in that community so that you have a ready list of capable people that you would like to have work for you. After recruitment, the interview is an important second step and one that requires some skill and practice. 20. Metrics—Dimensional Analysis Metrics, or technical measures of perfor- mance, are key to engineering data and opti- mization. But too many independent variables makes analysis and optimization difficult. Di- mensional analysis provides 129 dimension- less pseudo-variables (like the Reynolds num- ber) that are used in engineering designs. These pseudo-variables provide simplifications like figure of merit can. 21. 10-Step Business Plan The 10-step business plan is the format to present an idea or product in a fashion that will answer most questions that management has about a product or idea. It is how ideas and products come to reality. Figure 1: Breakdown of 25 engineering skills into areas of application. 25 ESSENTIAL SKILLS FOR ENGINEERS article