Pareto Principle
A large share of results often comes from a small share of causes, roughly 80 to 20.
Why it matters
It helps you focus limited effort on what most people use most.
How to use it
- Find the few features people use most.
- Make those paths excellent first.
- Check real data rather than assuming the split.
Example
If most orders come from reordering a past meal, that flow deserves more attention than a rarely used filter.
Watch out
80/20 is a pattern, not an exact rule.