There has been an error in the display of this page. There has been an error in the display of this page. Main Idea: Exercise 3 - Determining the main idea of a passage Instructions: Read the passage and type its main idea in the box provided. Click on the KEY PHRASES button to see important phrases.   Passage 3 of 4 Next Passage >> This passage was taken from Bringing Up Baby by Caitlin Flanagan. The New Yorker, Nov. 15, 2004.        There is nothing new, of course, about the idea of a novel baby product springing from a mother's homey solution to an everyday problem. The first baby swing, the Graco Swingomatic, was introduced in 1955, after an engineer at a Philadelphia metalworks factory watched his wife quiet a cranky baby using a back-yard swing. The difference is that today's mom inventors are entering a market in which there is an apparently limitless demand for new products. Each new invention spawns a host of others. The car seat, so simple and beneficial, first became widely available in the early eighties; more recently it has given rise to the car-seat-accessory business, which includes the car-seat cover, the car-seat travel bag, the car-seat mobile snack tray and activity center, the car-seat mat (which protects the seat from the car seat), and the car-seat clip-on blanket. Write the main idea here There has been an error in the display of this page.