What’s the point of thinking? Brin sees the future as a pressing threat, and Existence speculates that the reason we don’t see evidence of life on other planets is that no species survives its technological adolescence. The solution? We need to be smarter than our parents and work to give our kids the tools to be smarter than we are. In the book, the ultimate hope comes from a concerted effort to develop and diversify the coalition of Earth’s intelligent life, to make “humanity” encompass more than just the biological humans that we currently are.