Einstein's Theories of Relativity and Gravitation / A selection of material from the essays submitted in the competition for the Eugene Higgins prize of $5,000

by J. Malcolm Bird

. Let us then consider the statement: “If

, then

.” We know—at least we are quite certain—that

is not equal to 65, if by “7” and “19” and “65” we mean what you think we mean. We are equally sure, on the same grounds, that

is not equal to 66. But, under the one assumption that we have permitted ourselves, it is unquestionable that if