I think there is a world market for maybe five computers.

According to the Oxford Dictionary of Humorous Quotations (Oxford University Press, 2013), p. 63, this quote is not verified and it has been stated by IBM to derive from a misunderstanding of an occasion on 28 April 1953 when Thomas Watson Jnr. informed a meeting of IBM stockholders that 'we expected to get orders for five machines, we came home with orders for 18'