any reason behind the design of Japanese hammers like this one with all the weight at the front?
http://www.japanwoodworker.com/product.asp?s=JapanWoodworker&pf_id=05.501.300&dept_id=22936
http://www.japanwoodworker.com/product.asp?s=JapanWoodworker&pf_id=05.501.300&dept_id=22936