Laws of Software Engineering · Pattern
Pattern
The Ninety-Ninety Rule
The first 90% of the code takes 90% of the time. The last 10% takes the other 90%.
How to use it. The last 10% is fitting things together, polishing, handling edge cases, making it fast enough, making it secure. Plan it as its own phase.
How it gets misused. Treated as a doomy fact of life. It is a budgeting input. Plan for it.