The key lesson - the thing that gets glossed-over in opinion, assumption, and fluff = all that matters are the actions taken by individuals from his target mark

The key lesson - the thing that gets glossed-over in opinion, assumption, and fluff = all that matters are the actions taken by individuals from his target market. How the thing looks to you is neither here nor there. It's what it does subconsciously to middle-aged women teachers that counts... Wrong as that may sound. Assumption, anecdote, opinion - back it up with data! We're engineers (literally or metaphorically).