If it is your assignment to write copy for a product or service that you really don’t have a feel for, then you have a great deal of studying to do to make sure you understand who your customer is and what motivates him or her.
Joseph Sugarman (2012). “The Adweek Copywriting Handbook: The Ultimate Guide to Writing Powerful Advertising and Marketing Copy from One of America's Top Copywriters”, p.30, John Wiley & Sons