The Keynesian and Monetarism theory both have excerpts that are concise about economic activity and preventing any recessions or depressions. Keynesian solely focused on investment into the economy by the working class and businesses alike, Monetarism focused on the economic changes within a time period that can yield a negative effect or result on an economy. Saving and investment does foster growth, expansion, and increased job opportunities because when more capital is acquired more skilled labor is needed to operate the capital being used; on the other hand the economic year is broken down into quarters and there is the short-run and long-run to consider; whatever happens in the short-run can effect what will result in the long-run so it is important to make the most benefiting decision that minimize bad risks. The Federal Reserve decreasing or increasing the money supply effects the short-run and the long-run of the economy, all awareness and attention needs to be focused on listing all possible outcomes that can realistically happen or reoccur, and then assess whether an increase or decrease is appropriate.