"men are from mars and women are from venus"

men are from mars and women are from venus, itself tells taht thses are two different species from very dofferent places/planets. They cannot agree on one point atll ;). Morever they can live togetehr but with two dofferent thoughts. Basically as per book "Men are from mars and women are from venus" says that, men thinks in very practical way to issues and women thinks very emotional and sentimental way just beacause they are from venus as it remark of LOVE!!!

people say this because men and women seem so different to each other sometimes that they are like alien species.