Changes

:The "teeth in mouth" example:  Many if not most adults need to have their wisdom teeth removed. The balding example: Baldness is not necessarily undesirable. Some women--like my wife, find it attractive. Moreover, it often manifests long after a man has reproduced, passed on the trait, and is out of the mating pool. The schizophrenia example: Schizophrenics can reproduce before they demonstrate any symptoms and become undesirable mates, thus allowing the condition to perpetuate even if it is undesirable. [[User:BrentH|BrentH]] 23:42, 28 September 2011 (EDT)

:The "teeth in mouth" example:  Many if not most adults need to have their wisdom teeth removed. The balding example: Baldness is not necessarily undesirable. Some women--like my wife, find it attractive. Moreover, it often manifests long after a man has reproduced, passed on the trait, and is out of the mating pool. The schizophrenia example: Schizophrenics can reproduce before they demonstrate any symptoms and become undesirable mates, thus allowing the condition to perpetuate even if it is undesirable. [[User:BrentH|BrentH]] 23:42, 28 September 2011 (EDT)

::To shed further light on the removal of the balding example; studies have shown that bald men are perceived as being older and thus more senior, giving them an advantage within social groups. Therefore it is deemed to be somewhat advantageous. The fact that historically humans have had much shorter life-spans also means that most men died before experiencing it, meaning that it never even became a significant factor in terms of evolution, either as an advantage or disadvantage. [[User:DavidZa|DavidZa]] 23:52, 28 September 2011 (EDT)

::To shed further light on the removal of the balding example; studies have shown that bald men are perceived as being older and thus more senior, giving them an advantage within social groups. Therefore it is deemed to be somewhat advantageous. The fact that historically humans have had much shorter life-spans also means that most men died before experiencing it, meaning that it never even became a significant factor in terms of evolution, either as an advantage or disadvantage. [[User:DavidZa|DavidZa]] 23:52, 28 September 2011 (EDT)