Unstable Equilibrium

Housing Market Dynamics

A new social media platform experiences a small, initial increase in its user base. As more people join, the platform becomes more valuable to both new and existing users, because there are more people to connect with. This increased value then attracts even more new users. Which of the following statements best analyzes this situation?

Analysis of a Financial System Cascade

Consider a situation where an increase in a country's national income leads to higher consumer spending, which in turn causes businesses to invest more, further increasing national income. A student concludes that because the system is self-correcting and will naturally settle at a stable, predictable level, it is an example of a positive (reinforcing) feedback loop.

A rumor spreads that a regional bank may be financially unstable. Arrange the following events into the logical sequence that illustrates a self-amplifying cycle leading to the bank's failure.

Identifying a Reinforcing Cycle

Match each description of a system's dynamic behavior with the corresponding principle or example.

In a system where an initial change causes further changes that amplify the original effect, moving the system progressively further from its starting point, this dynamic is known as a ________ feedback loop.

A climate scientist presents a model where initial warming from greenhouse gases causes Arctic sea ice to melt. The reduced ice cover means less sunlight is reflected back into space, and more is absorbed by the darker ocean water. This absorption leads to further warming of the ocean and atmosphere, which in turn accelerates the melting of the remaining sea ice. A student critiques this model, arguing that since the system is changing and not returning to its original state, it cannot be a valid feedback loop. Which of the following provides the most accurate evaluation of the student's critique?

Evaluating an Intervention in a Poverty Trap