I was thinking of a reply to this, but then I thought hey, I don't think there's a technique that I can not imagine ever being able to eventually *get*...
It is true, but think, how many techniques exist in Aikido? A thousand and variations? How many we will learn during our lives? 100, 150, 300 for masters in full-time training.
It guarantees always a kryptonite-technique for everyone.