Public relations works through intermediaries
Due to it being compared with advertising, PR is maybe the least understood of all marketing tools. The basis of PR includes using intermediaries to communicate with your audience and influence them. Those intermediaries may be industry spokespersons, stock analysts, investors, trend setters, industry analysts, customers, employees, and even the electronic and print media. Typically your business has very little control over those influencers, or intermediaries, which will make public relations so difficult.