I listenened today to a lovely story about the Vienna Sausage Company in Chicago. They had been making sausages for hot dogs for around 70 years and built up a fine reputation for their Olde Worlde hickory smoked sausages. Then in 1970 they decided to move to a new purpose-built facility on the north side of Chicago which would allow them to make production more efficient. The sausages made in the new site weren't the same though. They used identical ingredients and the same process but the new sausages didn't have the same snap when you bit into them and even worse,, the colour was wrong. The new one were pink whereas the old ones were bright red. For 18 months they looked into every thing they could think of, even checking to see if there was something different to the water on the north side to that on the south side. One day a group of workers were in a bar reminising about the old days and the topic turned to Irvine, a character who'd been there for years, knew everyone and was fun to be around, but Irvine hadn't wanted to move to the north side. Irvine's job had been to take the sausages to the smokehouse. Suddenly someone realised that the only thing they hadn't considered was Irvine. The old factory had consited of a warren of buildings the company had gradually bought over the 70 year period. Getting around the site wasn't anything like as efficient as the new state of the art one. Irvine had to travel with the sausages from one end of the factory to the other, passing through various other processes the company was involved in where things such as corned beef were being cooked and the boiler room that heated the factory. His journey took around 30 minuites because he'd have a chat with people on the way. By the time he reached the smoke house the sauages had warmed up somewhat. So they thought that having tried everything else, they'd build a room to simulate what Irvine had been doing and lo and behold it worked. Sometimes you have no idea why you became a success in the first place.