Re: Article: Transmission in Aikido, Part II by George S. Ledyard
I don't think there is any problem with transmission. Folks who have a real desire to serious study with a Master will find a way. Others, who are content with less profound study, can study with local instructors. Even in shihan's dojo there is only small group of ppl wanting serious instruction.
Natural selection(instead of introduction letters) still does its job.