Much more pressure was required to bend the arm. Harrell returned to these four principles again and again as he and the Aikido club demonstrated some more difficult moves for the audience. He noted that students don't need to worry about self-defense. It will make you more positive and able to read situations better. Another important aspect of Aikido is that it is a defensive martial art.
Timing is really important.
Harrell said that much of Aikido training is spent learning good timing. Falling is another important thing. Aikido is very much like dancing, except for the falling down. It contains circular movements and blending motions. That is what makes rhythm crucial, Harrell said.