"between the cutting of most of the windpipe and the cutting of half. " when an animal is slaughtered- there's a law regarding how to slaughter in such a way where the animal doesn't feel pain- not even for a second, (I included this study in my book, "The Revolution") it's an amazing thing that the animal doesn't feel any pain even for a second in the Jewish ritual slaughter this is true only regarding clean animals that the Torah has permitted. 