Travel to work area legal status. However, they give planners and geographers an alternate view of urban life as their boundaries are tied not to arbitrary administrative limits but socio-economic ties. Having an idea of where people commute from for work is particularly useful for public transport planning. Travel to Work Areas are defined by the Office for National Statistics using census data for commuting between wards, based on the different locations of individuals' home and work addresses. A Travel to Work Area is a collection of wards for which "of the resident economically active population, at least 75% actually work in the area,
Peripatetic school the time of Andronicus the school concentrated on preserving and defending his work. The most important figure in the Roman era is Alexander of Aphrodisias (c. 200 AD) who wrote commentaries on Aristotle's writings. With the rise of Neoplatonism (and Christianity) in the 3rd century, Peripateticism as an independent philosophy came to an end, but the Neoplatonists sought to incorporate Aristotle's philosophy within their own system, and produced many commentaries on Aristotle's works. In the 5th century, Olympiodorus the Elder is sometimes described as a Peripatetic. The last philosophers in classical antiquity to comment on Aristotle were Simplicius and Boethius