It can't be an accident that God gave humans years upon years in which to grow from childhood to adulthood. So much happens in the process. His wisdom saw fit to require much time to form and shape full growth. Miracles aren't all instantaneous.
But, what if those early years which were spent growing us physically left other aspects of ourselves stunted? Our body grew in height, but what about our mind? Our character? Were these simultaneously being broadened and strengthened along with our frame? Were they being nourished by rich, living ideas and exercised by deep, worthy thoughts?