Reinforcing loops, also known as positive feedback loops, amplify changes within a system ... or viral marketing but can be detrimental in situations like the spread of disease or panic. Balancing ...

Aknin, Lara B., Elizabeth W. Dunn, and Michael I. Norton. "Happiness Runs in a Circular Motion: Evidence for a Positive Feedback Loop between Prosocial Spending and Happiness." Journal of Happiness ...

Allowing for 45⁰C of phase margin in a design will protect it from large shifts due to large component tolerances in manufacturing.