The Importance of Having Light Light has been around for a century or two and can be produced in a few different ways. There are ceiling lights and lamps, flashlights, and fire/candles. Light is especially useful at night time when it's dark outside. Light can also be used during the day when there isn't enough The Importance of Having Light Light has been around for a century or two and can be produced in a few different ways. There are ceiling lights and lamps, flashlights, and fire/candles. Light is especially useful at night time when it's dark outside. Light can also be used during the day when there isn't enough