True but there is more. To go deeper on this you can check Signalling Theory. https://en.wikipedia.org/wiki/Signalling_theory https://en.wikipedia.org/wiki/Sign

True but there is more. To go deeper on this you can check Signalling Theory. https://en.wikipedia.org/wiki/Signalling_theory https://en.wikipedia.org/wiki/Signalling_theory Spent, Geoffrey Millers' book is a fantastically good reading on this subject. You would be surprised on how much that theory can explain and predict. https://www.amazon.com/Spent-Sex-Evolution-Consumer-Behavior/dp/0143117238 https://www.amazon.com/Spent-Sex-Evolution-Consumer-Behavior...