SSH 105 Lecture Notes - Lecture 6: Cardiovascular Disease
2 Apr 2017
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A causal claim can state a necessary causal condition. It can also state a sufficient causal condition. A lawn will grow only if you water it . If billy takes a tylenol, his fever will fall. Billy just took a tylenol, so his fever will fall. A lawn will only grow if you water it. It hasn"t been watered, so it won"t grow. Often difficult finding out what causes what. Causal complexity - causes are usually complex. Limited data - we usually don"t have enough data. We haven"t been studying heart disease for very long so we can"t narrow down the possibilities yet. Post hoc mistake - believing one thing caused another because it happened first. We cut taxes, and the economy soared, so cutting taxes boosts the economy. A is a necessary causal condition for b only if a must occur every time b does. Five people at a dinner party got sick.
