I’ve heard it said that “some individuals ‘know’ lots and lots of techniques.”
I’m not sure what this means.
Of what use are “lots and lots of techniques” since all you need is clear noticing of attack and one lucid response flow that deals with the attack at hand.
There is no point doing an irrelevant techniques because quite simply it will not deal with the attack that is imminent.
Therefore “knowing” by intellectually remembering a lot of clutter is useless. Sure, reference points are a requirement of teaching in order to impart varied experience to students. For this we have the basics, the kihon, the keys or core techniques.
But gratuitous collections of stuff serve no purpose in the fields of battle. You only need to identify the attack and adjust accordingly and no other way.
To practice endless variables is good in training because it tunes you in to the one primary principle back of all techniques and enables body mind flexion in application.
After that there is neither attack or defense but the movements of the universe and nature.
What we think are attacks and defenses are the warps of the mind and ego playing tricks.
We have to learn to think beyond attack and defence before Aiki can emerge and become the Do.