I'm often surprised at how far away I can be from the device and have it hear the trigger, but I also notice that it has a habit of trying to guess what you are

I'm often surprised at how far away I can be from the device and have it hear the trigger, but I also notice that it has a habit of trying to guess what you are saying when the input is weak instead of telling you that it didn't hear it well. I.e. if I move a few feet closer and repeat the same input string it will execute correctly. It feels like they should be less shy about having Siri just tell you that that the signal to noise ratio was too low for it to be sure of what you said.