"It's very hard to write humor"

In this quote, Mark Strand is revealing the problem of writing humor. He is acknowledging that it is not an easy task to make individuals laugh through composed words. Humor is a complex and subjective principle, and what may be funny to one person might not be to another. For that reason, crafting humor in writing needs a deep understanding of the audience and the capability to utilize language in a smart and unforeseen way. It takes skill and practice to master the art of writing humor, and even then, it may not constantly be successful. Hair's words act as a tip of the difficulties that come with trying to make others laugh through the composed word.