This document discusses issues around error correction when teaching English as a second language. It raises questions about what should be corrected (grammar, pronunciation, etc.), how corrections should be done (explicitly, implicitly, etc.), and when during a lesson corrections should occur. The document also notes a discrepancy between what teachers and students prefer - teachers generally favor selective corrections while students would like all mistakes addressed. It argues the goal should be effective communication and corrections should target errors that cause breakdowns in understanding.