Normal goods are consumable products that increase as income, and expected income increase. Normal goods are directly correlated to the economy, which gives economist an indicator of where the economy is and where it is going. Economists can do this by looking at whether normal good sales are increasing, decreasing, or staying the same. If normal good sales are increasing that means the market in likely to be growing; if normal good sales are falling we can expect the market to be doing the same. Normal goods are the most common good found in economies. Cars, milk, jewelry, and gasoline are all examples of common normal goods. One of the keys to understanding normal goods is the idea that people’s spending patterns are largely based on how much money they expected to earn, rather than how much they are making. Economies, for a large part, are based on people’s feelings towards the future; if people are optimistic about the performance of the market, we can expect the market to perform well. The optimistic perspective follows through to consumption. People, expecting better income, will purchase, at a greater rate, normal goods. Though, if people are pessimistic that does not mean they will only consume less, they could consume at the same rate, but be consuming inferior goods. Inferior goods are goods that increase in sales as people’s predictions of the economy turn negative. So being able to classify goods as either normal, inferior, or merit, really helps us understand people’s outlook on future earnings by looking at what they are buying.