 <p>Humans.</p> <p>You want to improve readability, and since readability is mostly a human thing it should be taught by a human.</p> <p>Ask more experienced developers to review your expressions and give tips.</p> <p>For example, see my answer here: <a href="http://stackoverflow.com/questions/5924611/what-is-the-best-way-performance-wise-to-test-if-a-value-falls-within-a-thresho/5924659#5924659">What is the best way (performance-wise) to test if a value falls within a threshold?</a></p>