As we walk down the memory lane of English language teaching, we can see a correlation between the trends in the most popular language acquisition theories of its time, and the application of such assumptions into the language classroom. Whether it be Krashen's 'affective filter' hypothesis translating into humanistic approaches, such as suggestopedia, or Searle's speech acts giving rise to the functional syllabus, practioners have tried to apply theory to practice in a way that best helps learners to best acquire the language. But we don't always get it right.