0.05 0.9 0.02 0.99 0.9500000000000001 DirtyConnectors ShortCircuit Starter Battery Fuel cause cause barrier barrier barrier 0.7000000000000001 0.6 1 0.8 1 0.05 This simple model illustrates the interaction of Causes and Barriers in the DeMorgan gate.\nCauses are able to cause the engine not to start. Absence of Barriers is also able to cause the engine fail to start.\nBarriers and Causes are dual of each other: Barriers are negated causes. Their absence is able to cause the effect. In this model, they happen to be much stronger than the causes but this does not need to be so.\n\nThe model contains probabilities that might be typical for an older car (please note the 5% probability of dirty connectors and 1% probability of starter not working) that is not too well taken care of (note the high a-priori probability of short circuit caused by water), and driven by somebody who often happens to drain battery (10% probability of battery not having adequate charge) and forget about refueling (5% probability of empty fuel tank).\n\nSource:\nBayesFusion, LLC Dirty Connectors 42 204 151 272 Battery Charge Is Adequate 370 148 491 223 Engine Fails to Start 195 337 306 406 Short Circuit Caused by Water 79 73 211 155 Starter is Working 284 49 379 108 Fuel Is Present 407 259 497 315 This simple model illustrates the interaction of Causes and Barriers in the DeMorgan gate.\nCauses are able to cause the engine not to start. Absence of Barriers is also able to cause the engine fail to start.\nBarriers and Causes are dual of each other: Barriers are negated causes. Their absence is able to cause the effect. In this model, they happen to be much stronger than the causes but this does not need to be so. 539 41 799 307 The model contains probabilities that might be typical for an older car (please note the 5% probability of dirty connectors and 1% probability of starter not working) that is not too well taken care of (note the high a-priori probability of short circuit caused by water), and driven by somebody who often happens to drain battery (10% probability of battery not having adequate charge) and forget about refueling (5% probability of empty fuel tank). 37 431 675 545