Even in the digital age, simple things have survived. Earthlings might send tens of billions of text messages each and every day, but when it comes to organization, the old ways are often best. Whether you call it a chalk or blackboard, most classrooms around the world rely on these ancient communication devices. Although they have gotten a bit more sophisticated in recent years, the chalk board has remained more or less unchanged for centuries now.
One significant, cultural development has been the movement of blackboards from the classroom into the home. This includes both traditional devices and chalkboard paint, which is a type of paint that has a finish that closely resembles a chalk board when it dries. The surface can be used in much the same way, but may have to be retouched from time to time.
