Steam comes from trains. Trains come from steel and other various metals. Steel and other various metals come from workers in factories. Workers in factories come from the Industrial Revolution during the 18th century. The Industrial Revolution during the 18th century came from history books that schools distribute throughout the year. History books that schools distribute throughout the year come from paper. Paper comes from trees. Trees come from saplings. Saplings come from seeds. Seeds come from molecules. Molecules come from nature. Nature comes from concepts. Concepts come dreams and fantasies. Dreams and fantasies are what we are living now. Not really reality. :^)