Check out Preventing Project Delays: The Two Tools You Need by Tzvi Z.. Here is an excerpt:
It always starts innocently enough. An overlooked detail, perhaps. An illness on the project team. A vendor sheepishly admits they can’t supply something for another two weeks. Whatever the cause, project delays can cascade like an avalanche – a snowball can quickly grow into a skyscraper-sized…
The full article is available here.