Chuck Clark wrote:
Jun, there are many of us (even the "average") out in the "aiki wastelands" that know what slack is...
Yes, I didn't think the term 'slack' was that hard to understand.
Kashiwaya Sensei's simple demonstation of it is to take a towel hold it between boh his hands. Brings his hands close, the towel droops down,
that's slack. Pulls his hands apart hard so the towel is stretched taut, this is not slack but there is also tension. Relaxes his hands enough so the towel is not stretched but does not droop, this is no slack without being tense.
Now knowing that and seeing it is one thing. It's a challenge to maintain that feeling while performing technique.