Initally when the double edge first was made available to the gneral public the makers could not sell any of them. Men figured that they had this razor that had been doing hte job great since the dawn of time and there was no need to change anything. Clearly they had to do something, their product was not nearly as good as what their customers had in their hands and they could not sell anything. So even then the marketing strategists told the makers if you have a product that costs more and gives less in excahnge then you have to go on the offensive to be able to sell your product. They called into question the safety of the straight razor (in modern times this is reffered to as spin (lieing to the public)) and that marketing campaign has stuck with us since then to the modern age.