Simon Kirk Sørensen
Yes, you are quite right, we do follow Nishio Sensei's teachings. Thank you for the clarification.
But it made me think. Is the opening atemi supposed to be able to finish the attack whith a knockout, but we choose not to because of the filosofi behind Aikido?
Exactly right...Not with a "knockout" necessarily ...but with enough intent to help our attacker/uke stop fighting with us. The first Atemi should give us a method to end the attack and/or help facilitate an opening to execute whatever technique our attacker gives us. In most cases (as shown in Saotome's Sensei's excellent video clips in this thread) some form of Iriminage.