How will the internet affect the human brain and human culture as a whole? This story is still being played out. In a 2009 study published in the journal Cell Death and Differentiation, Italian scientists found that physical activity, social interaction, and multi-sensory stimulation affects the central nervous system both in terms of turning on certain genes as well as causing the increased growth of cells, especially the visual system of the cerebral cortex. For example, the act of reading these words is influencing the connections in your brain right now. But since we, humans, are the ones creating this technology, we are equally responsible for how we use it. We can choose when we use technology, and we can choose when to turn it off. We can also choose when to focus our attention on the things that are deeply important—truly being present with people we love.