Rafael Sacks, Ronen Barak, Biniamin Belaciano, Ury Gurevich and Ergo Pikas (2012) KanBIM Workflow Management System: Prototype implementation and  field testing. Lean Construction Journal 2013 pp 19-35 www.leanconstructionjournal.org (submitted 19May12; resubmitted 01Jan13; accepted 4/5/2013)

In the early 1930’s, the 102-story Empire State Building was built in just 16 months.  More than 70 years later, the similarly sized Taipei 101 Tower took 84 months to build. While this may be an unfair comparison, it certainly doesn’t feel like progress!