Let us consider the rebus principle utilized in logo-syllabic scripts. Most signs were originally pictures denoting the objects or ideas they represented. But abstract concepts such as 'life‘ would be difficult to express pictorially. Therefore the meaning of a pictogram or ideogram was extended from the word for the depicted object to comprise all its homophones.
For example, in the Sumerian script the drawing of an arrow meant 'arrow', but in addition 'life' and 'rib', because all three words were pronounced alike in the Sumerian language, namely ti. Homophony must have played a role in folklore long before it was utilized in writing. The pun between the Sumerian words ti 'rib' and ti 'life' figures in the Sumerian paradise myth, in which the rib of the sick and dying water god Enki is healed by the Mistress of Life, Nin-ti. But the Biblical myth of Eve's creation out of Adam's rib no more makes sense because the original pun has been lost in translation: 'rib‘ in Hebrew is Sela no connection with Eve's Hebrew name H‘awwa:, which is explained in the Bible to mean - mother of all living
- Asko Parpola ( Is the Indus Script not a writing System)