Many of the superstitions surrounding number have a basic in science and nature For example early astrologers believe that seven planet governed the universe and therefore the live of human beings A seventh child was thought to have special gifts Human life was divided into seven ages Every seventh year was believed to bring great change If a person date of birth could be divided by seven that person lift would be lucky For the ancient Babylonians three was a lucky number because it symbolized birth life and death some people still believe that a dream repeated three times comes true