Adaptation is a translation technique that modifies the content to account for cultural differences between the source and target languages. It has been used for centuries to make texts more appropriate, familiar, and relevant. While it can distort the original meaning, adaptation is commonly used for fields like advertising, subtitling, and translating meta-linguistic texts. There are two types - local adaptation modifies elements like names and references, while global adaptation can change the overall meaning. The technique remains controversial as some see it as a betrayal of the original work.