And yet the "secret" methods of Aiki are outlined in DR.
With all their surprising corrolations to what I have seen of two Internal arts so far. DR's In-yo ho can and did stop Ueshiba's students in their tracks.
But, as was argued in the other thread. It doesn't exist and Ueshiba was "unqiue in all the world" and no one else can and will eve be able to do it so just ignore this stuff, settle for being less and get on with waza.
Everyone is "unique in all the world"
. That's why criminals get caught through fingerprints and DNA analysis.
Why should anyone of us settle for being less? Especially since these abilities are part of the waza.