Kanban - Channel the Pain (technology-ebay.de)

Usually flow is visualized as a nice, slow, peaceful floating river. That provides a good feeling, doesn't it? In this article, eBay's Holger Hammel prefers to look at it this way: you are in the middle of a dangerous, wild river in the mountains. You can be thrown with full force against big stones. That hurts! Or you don’t move at all, that is at least boring.