Generalisation in NLP is one of the three major processes (including Distortion and Deletion) on which the Meta Model is based. Generalisation occurs when one specific experience represents a whole class of experiences. Generalisation also occurs when one experience is generalised to the whole. If you learned to open one door, it’s a good idea for your brain to recognise that there are many shapes that also represent doors, and you don’t have to re-learn every time you meet another type or door.