Here it is, in all its glory. Three guys are sitting around discussing the greatest invention ever. It opened up society and changed our way of life. Offshoots such as the truck changed distribution, the development of cities, rural areas, and suburbs.
Second guy says.
No, it was the telephone. It revolutionized communications, made anyone accessible to anyone else, anywhere in the world. It created the template for all future communications media, changed business, social interaction, and created entire industries. The Thermos bottle. The other two are incredulous.