You know the difference between a hard and soft art, right?
Now you can understand the subtleties of hard and soft within your own art whether it be Karate, Kempo, TKD, Ju-jutsu, or Kung-fu! Does hard and soft refer to your effort or your effects on the receiver? Does hard and soft refer to striking/not-striking or the type of energy used? Rather than offering a pat solution, Tony Annesi (Takeshin Aiki Ju-jutsu) suggests fascinating options to consider.
More variation exists even in the Aiki arts than Hard & Soft can accurately encompass. (90 min.)