An experienced engineer will know it is sometimes better to have a simple and short solution that `when bugged, you can fix it in 30 minutes` than a complete fu

An experienced engineer will know it is sometimes better to have a simple and short solution that `when bugged, you can fix it in 30 minutes` than a complete full solution that `you will never be able to find out where did it went wrong`. Somethings the extension points you designed is never used, but it still has maintenance cost. And that really should be avoided.