Originally Posted by
Itsunari 2000
The curvature allows for lightness and a razor-sharp edge - have you heard of the art of iaijutsu ? Itis the "striking art " , a supplemental to kenjutsu - it involves drawing the blade from it's sheath at lightning speeds into a simultaneous cut. This required intense training , perfection of technique and an almost supernatural level of physical and mental coordination channelled into a single , devastating strike.
Imagine the scene... a big burly warrior comes lumbering in , dragging his broadsword out of his sheath ... then , in the blink of an eye , his head has been sent sailing from his shoulders in a fine crimson spray , beheaded beforehe could even fully draw his sword. It is in these applications , the skill of the swordsman , as well as the purity and sharpness of the blade that makes the wielder of a katana superior.
PS : Katana would never get blunt , considering the samurai warrior would have his blade beaten, tempered and sharpened with a whetstone at least 300 times a day.