Like no other can

We were at a service station on the way home today and I bought a can of Coca-Cola. Two cans actually because they were on special - two for $6. I was planning to buy a can of drink, I just hadn't planned on a 500ml can - who ever knew there were cans larger than 375ml. So why did I buy the larger can? It looked so good - I think they must have used the Golden Ratio or something like it in the design of the cans, because they certainly hit the right visual note. Examples of the Golden Rule in nature - snailshells and sunflower seeds; in art - the Mona Lisa. The Golden Ratio is 1.618 (or thereabouts). Powerful figures indeed ... that could be why it's used so widely in the advertising industry.