Harvard’s Center on the Developing Child came up with this interactive infographic that provides a succinct, simple explanation about the importance of each of those five numbers. Altogether, according to the infographic, they add up to this:

Getting things right the first time is easier and more effective than trying to fix them later.
Early childhood matters because experiences early in life can have a lasting impact on later learning, behavior, and health.
Highly specialized interventions are needed as early as possible for children experiencing toxic stress.
Early life experiences actually get under the skin and into the body, with lifelong effects on adult physical and mental health.
All of society benefits from investments in early childhood programs.