Ashby (1960, section 11/5) offers three simple strategies for dealing with the same basic exercise-problem; and they have very different efficiencies: Suppose there are 1000 on/off switches which have to be set to a particular combination by random-based testing, each test to take one second.
Digestive Health. Subscribe to our Digestive Health e-newsletter to stay up to date on digestive health topics. Crohn's disease is an inflammatory bowel disease (IBD). It causes inflammation of the lining of your digestive tract, which can lead to abdominal pain, severe diarrhea, fatigue, weight loss and malnutrition. Inflammation caused by Crohn's disease can involve different areas of the digestive tract in different people.
Crohnâs disease causes chronic inflammation and erosion of the intestines or bowel. It can affect different regions of the bowel, stomach, or intestines. There are five different types of Crohnâs disease, each affecting different parts of the digestive tract. Thereâs no known cause of Crohnâs disease. Experts think that it may be due to the immune system reacting to food or bacteria in the intestines or bowel lining. This is thought to cause the uncontrolled inflammation associated with Crohnâs disease. Treatment depends on the type and severity of the disease. Each of the five types of Crohnâs disease is associated with its own symptoms and specific regions of the digestive tract: ileocolitis; ileitis; gastroduodenal Crohnâs disease; jejunoileitis; Crohnâs colitis; Sometimes people experience more than one type of Crohnâs disease at the same time.