'It's really incredible how the world of software developed by adults differs from the software developed by kids.' Well, if I may... What actually tells adult

'It's really incredible how the world of software developed by adults differs from the software developed by kids.' Well, if I may... What actually tells adults and children developers apart is their swift ability to bring nuances (like in 'pros n cons') on the table when choosing the more efficient techno for a given problem. Yes, Qt has great pros. No, Qt is obviously not The Silver Bullet.