which isn't you know it leads to instability so in our case we took it three times here or multiple times especially for the same objective here we have twice something that was encoded by the same neural networking isn't the two sides of this by linear product so if we were to use the same neural network that tends to be somewhat unstable so we have different neural networks one that will encode the query which is this F Q + 1 which will encode the keys sorry F ok now we don't want to learn to neural networks and that's why