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BTW, my specialisation is aeronautical engineering, and technical human resource management in aviation. Analysis in this field is primarily based on systems analysis and implementation relating heavily to safety. System analysis is engineering jargon for "look at the bigger picture", and analyse the problem looking at a macro rather than micro level. Mass consumer markets and their behaviour is a hobby subject, as is psychology of both individuals and groups. The knowledge i have gainer from my job is suprisingly applicable to mass market economics.