This document discusses phenomenology and phenomenological sociology. It explains that phenomenology studies things as they appear to our senses rather than as they are in themselves. Phenomenological sociology, developed by Alfred Schutz, applies this idea to the social world. It argues that we impose meaning and order on the world through shared mental categories and typifications that enable social interaction and the construction of a common "life world". However, the meanings of experiences depend on social context and can be unstable without these typifications.