We use the with a singular countable noun in certain instances to make a statement about the entire group. The lily grows in the spring. Lilies grow in the spring. The cow is our friend. Cows are our friends .
American businesses revolve around computers.
The Wright brothers invented the airplane in 1903. The rest came after the initial invention. Steven Tyler suggests that we eat the rich. Her home has become a shelter for the forgotten. Musicians bother Kathleen.