We can dissect the term “readability” into “read” + “ability,” which translates into the ability to read. We can assess readability through readability tests by applying readability formulas. Readability formulas are mathematical in nature; its primary aim is to measure the grade level a person must have to read and comprehend a text. Most readability formulas are based on one semantic factor, i.e., the difficulty of words, and one syntactic factor, i.e., the difficulty of sentences. We don’t need to calculate other factors, as they tend to make the formulas more complex and achieve little in return. Another startling fact about these formulas is that you don’t need readers to read out (or try to read out) the text. However, readability formulas don’t always work with 100% accuracy.