In PX22, Jess Noonan and Peter Jewell interview Johnny Barnard, a 'population observer' - he is a demographer, with over 25 years experience. Johnny is a Director at ID Consulting an Australian and New Zealand firm that specialises in reviewing and providing analysis of population changes, past and future. In a broad ranging interview Johnny discusses the advances made in the profession, potential pitfalls with forecasting, the use of the data, value judgements in population analysis, emerging city issues, the census and makes predictions based on current trends. In additon he discusses the importance of city structure to the well being of communities and the desirability of creating equitable cities. This is the final PX podcast for 2016. Music: Intro - 'Walk right up' by Ladi6. Outro - 'Mais Que Nada' Segio Mendes & Brasil 66. Podcast released in December 2016, remastered November 2017. For more information visit www.planningxchange.org.