To quote from Joel [1]: Way back in September 1983, I started my first real job, working at Oranim, a big bread factory in Israel that made something like 100,

To quote from Joel [1]: Way back in September 1983, I started my first real job, working at Oranim, a big bread factory in Israel that made something like 100,000 loaves of bread every night in six giant ovens the size of aircraft carriers. The first time I walked into the bakery I couldn’t believe what a mess it was. The sides of the ovens were yellowing, machines were rusting, there was grease everywhere. “Is it always this messy?” I asked. “What? What are you talking about?” the manager said. “We just finished cleaning. This is the cleanest it’s been in weeks.” Oh boy. It took me a couple of months of cleaning the bakery every morning before I realized what they meant. In the bakery, clean meant no dough on the machines. Clean meant no fermenting dough in the trash. Clean meant no dough on the floors. Clean did not mean the paint on the ovens was nice and white. Painting the ovens was something you did every decade, not every day. Clean did not mean no grease. In fact there were a lot of machines that needed to be greased or oiled regularly and a thin layer of clean oil was usually a sign of a machine that had just been cleaned. This is what a dough rounder looks like.The whole concept of clean in the bakery was something you had to learn. To an outsider, it was impossible to walk in and judge whether the place was clean or not. An outsider would never think of looking at the inside surfaces of the dough rounder (a machine that rolls square blocks of dough into balls, shown in the picture at right) to see if they had been scraped clean. An outsider would obsess over the fact that the old oven had discolored panels, because those panels were huge. But a baker couldn’t care less whether the paint on the outside of their oven was starting to turn a little yellow. The bread still tasted just as good. [1] https://www.joelonsoftware.com/2005/05/11/making-wrong-code-look-wrong/ https://www.joelonsoftware.com/2005/05/11/making-wrong-code-...