It may be true that unless you’re making mistakes more challenge is needed. Everyone getting their education this way may however not be best. It may be good to believe in others and to create new leaders and to mentor them so they learn things of value in easy ways. Even experienced leaders may benefit by consulting with others. Be a mentor to others. And ensure you have folks to consult with too.
No single human being has all the answers. Perhaps someday a manifestation produced by our interconnected consciousness and computerized universe will?