My understanding of ukemi is constantly evolving and today is not even comparable to even last year. I have not idea what 'blindly' means ...

For me, at this point in my understanding, ukemi is the whole point of aikido and one must constantly 'monitor' and find the opening or weak points in technique to enable application of reversals - totally active and engaged.

How did Osensei learn from Takeda - as uke or as tori? Something to contemplate. Being able to find openings in others is the beginning to finding openings in oneself and then starting the work on closing them. Seem to me that ukemi is an excellent research tool in this regard.

If we refuse to consider new ways of looking at things then we are doomed to repeat the same old mistakes ad infinitum.