God's appointed servants (godly parents, grandparents and pastors) preclude the old Dutch saying, "Ve get too soon oldt, undt too late shmart."
God gives knowledge, understanding and wisdom through His word, His Spirit, His appointed servants and our experiences.
People often get their "shmarts" from their experiences, because they refuse to listen and yield to God's word, Spirit and appointed servants.
The people who boast that, "experience is the best teacher," are usually too stubborn or too proud to listen and learn from God's word, Spirit and appointed servants. They would rather reinvent the wheel, than improve the ride.