PeterR

The video I posted was one.

The other was the idea that the stance is very stable forward facing - less so from other directions. The opinion, which on the face of it sounds reasonable but to me does not feel correct, was that it was tailored to the riot police course since their threat is always from the front.

Two tidbits as promised. Did not say that either was particularly profound.

The video certainly tells me that the stance was older than any police course but it still begs the question as to when and what purpose did it become kihon in the Yoshinkan. And further, at what point does one break away from that and adopt a less rigid stance.