Marketing by nature is customer oriented, therefore research is vital for the growth and development of any business venture. Data collected by research methods can reveal the real wants and needs of internal (employees) and external customers or clients.
The old debate continues, what is marketing and what is PR? Is PR not just a part of Mc Carthy's Marketing Mix? Check out Cutlip, Center and Broom for a full debate on this, however I would tell you that if you take pigs to market you would get some money for them, however if you don't take the pigs but get every one in the market to talk about how great your pigs are you create goodwill for the pigs and by extension a loyal demand.