I've addressed this elsewhere (in “Write for a specific, powerful audience”), which I will quote here:
Picking an audience varies from genre to genre and purpose to purpose. Unfortunately, students frequently default to “parents,” “teachers,” and (this one makes me want to break things) anything that starts with “people who...” The problem with these audiences is it’s difficult, if not impossible, to address them as a whole because there will be so many different groups within the larger body. Writing for them can mean relying on logical fallacies and broad assumptions that reflect your own bias more than your understanding of the demographic you're trying to write to.
So broad, vague, audiences while trying to write argumentatively, is just spinning your wheels: you'll make some noise and some smoke, but in the end, it'll dissipate and you won't go anywhere.
I think the issue stems from two sources. The first is how arbitrary the concept is in a lot of English education and the second is popular media. As much as teachers pound it in, audience rarely ascends beyond something to mention, especially when it is closely tied to genre in literature studies, with genres written to appeal to broad audiences for the sake of market appeal and sales. This leads me to popular media, which acts the same way. Basically, it's easy to say “people who've watched Star Wars” because, in American culture, if not worldwide, this demographic will be large.
Authors and directors thrive off of this appeal to a wider audience, but, in education, there's the underlying, frequently unstated, fact the teacher is the audience and whatever a student writes, they need to tailor it to their teacher.
As it turns out, paying careful attention to and even seriously researching your audience can help shape what you're writing and helps you to better understand your topic and its implications, which is why audience is especially important in argumentation and persuasion. In the same post as the above quoted paragraph, I also said:
[A] specific audience (one that has a formal name, whether it's an individual or an organizational body) is a far better option.
Sometimes I elaborate on this by asking whether or not the audience has a physical mailing address. If, for example, you were to write to “parents,” what address would you put on the envelope? It's one thing to write for parents saying they should do something, but it's another thing to write to, for example, a major publication that has a large audience consisting of parents who share your concerns and interests.
Allow me to elaborate:
Note that saying something like “a school district” is still indistinct because every school district has different priorities and standards: your essay that may be gladly accepted by one would be vehemently rejected by another.
Basically, if your audience is vague, adjust it to a more specific audience that has direct influence over the issue you are concerned with. This may seem redundant but it is significantly more realistic because, outside of the classroom, this is how you would do it and because it forces you to evaluate your audience and tailor your writing to them.
So, in short, specify your audience.
Vague Audience | Specific Audience |
---|---|
Parents | Parenting magazines, websites, and blogs |
Teachers | A specific school, a school district, a parent-teacher association, a state's board of education. |
Doctors | A hospital or clinic, a medical association |
Government | State legislature, a senator or congressperson, a state managed organization |
Employers | The Better Business Burearu, a manager, supervisor, or owner of a business. |
Basically, if your audience is vague, adjust it to a more specific audience that has direct influence over the issue you are concerned with. This may seem redundant but it is significantly more realistic because, outside of the classroom, this is how you would do it and because it forces you to evaluate your audience and tailor your writing to them.
So, in short, specify your audience.