Positive Externality Example: A Beautiful Garden

A beekeeper maintains several hives to produce and sell honey. A significant side effect is that the bees pollinate a large, neighboring commercial apple orchard, substantially increasing the orchard's fruit yield. Based on an analysis of the costs and benefits, why is this pollination service best classified as a positive externality rather than a pure public good?

Classifying a Community Project

Analyzing Economic Scenarios

Vaccines: Public Good or Positive Externality?

A large technology company invests heavily in a comprehensive training program for its new software developers. This program significantly boosts the productivity and innovation within the company. Over time, some of these highly skilled developers leave to work for smaller startups in the same city, bringing their advanced knowledge with them. How should the resulting increase in the skill level of the city's overall developer workforce be classified, and why?

A homeowner installs an expensive outdoor lighting system to improve the security and appearance of their own property. This lighting also illuminates the public sidewalk, increasing safety for nighttime pedestrians. Why is this increased sidewalk safety best classified as a positive externality rather than a public good?

A city government funds a project to offer free, city-wide wireless internet access. The system is designed so that one person's use does not slow down the network for others, and it is open for any resident or visitor to connect. The project is funded by general tax revenue.

Statement: This service is best described as a positive externality because it provides benefits to people, such as visitors, who did not directly pay the taxes to fund it.

Analyze each scenario by considering who bears the cost and who receives the primary benefit. Match each scenario to the economic concept it best illustrates.

Evaluating Public Policy Proposals

Lake Weed Management Dilemma