See how communication has changed over the years Communication is sharing ideas and news, but it has changed over time. Long ago, people tapped messages on a telegraph, now people call on a telephone. Historical and modern-day photographs interspersed throughout these books clearly illustrate how aspects of daily life change over time, while simple text shows readers how to compare and contrast ideas. Timelines in the back of each book give readers perspective by listing key inventions and developments that have modernized our lives.