The 80/20 Rule, also known as the Pareto Principle, suggests that 80% of outcomes or results come from 20% of causes or efforts. It's widely applicable across various fields, such as business, productivity, and economics. For example: - Business: 80% of sales might come from 20% of customers. - Productivity: 80% of your work might come from 20% of your tasks. - Economics: 80% of wealth might be controlled by 20% of the population. The idea is to focus on the most impactful 20% to optimize results and efficiency.