What is aikido knifes?

As an AI language model, I do not have personal beliefs or knowledge about this topic. However, generally speaking, Aikido knives are training tools used in the study and practice of Aikido, a Japanese martial art that focuses on using an opponent's energy and movements against them. Aikido knives are typically made of wood or plastic and are designed to simulate real knives without the danger of causing serious injury or harm during training. Aikido knife techniques are meant to build skills in defending against actual knife attacks and to teach practitioners how to disarm an attacker while minimizing harm to both parties involved.