The naming of the 'sandwich' is attributed to John Montagu, the 4th Earl of Sandwich. A hardened gambler, Montagu reportedly did not want to leave his gaming table to eat. He asked his cook to bring him meat tucked between two pieces of bread so that he could eat with one hand and continue playing cards without getting grease on the cards. While people had certainly eaten bread with meat before, the term 'sandwich' became popular among his social circle. The concept revolutionized portable food, making it an ideal meal for workers during the Industrial Revolution. Today, the sandwich is the cornerstone of lunch in much of the Western world. Structurally, a sandwich relies on the 'bread barrier' to keep moisture from the fillings from reaching the eater's hands.