Re: Would you correct your sempai?
Yes, of course Judo is a slightly different situation. Judo also has kata and they are told not to resist but to cooperate when practising kata. No one in their right mind, in Judo, would fight against a technique in kata. And Aikido is mostly, kata, yet some seem to resist like crazy. They do this becuase there is no other way to test whether it really works of not. Actually, although I used to hate this, I now really like it.
One thing that has always driven me nuts though is this scenario: Senior resists until junior does the technique the senior's way, at which time, the senior stops resisting and lets the junior do the technique, thereby implying that it must now be correct... Who is fooling who? Is this the way for correct learning? If the seniors technique is good, then all may be well and good, but often, the diference between the two (junior/senior) is not more than a couple of grades or a few months of training. But sometimes, often maybe, the junior is really not so junior, except in a certain dojo's space.