- Inputs and outputs are often not evenly distributed.
- A large group may contain only a few meaningful contributors to the desired outcome.
- Focus the majority of effort on the areas that will bring the largest benefits to the most users.
Its origins stem back to Vilfredo Pareto, an economist who noticed 80% of Italy’s land was owned by 20% of the population. Though it might seem vague, the 80/20 way of thinking can provide insightful and endlessly applicable analysis of lopsided systems, including user experience strategy.
Users often perceive aesthetically pleasing design as design that’s more usable.
Among competing hypotheses that predict equally well, the one with the fewest assumptions should be selected.
Any task will inflate until all of the available time is spent.