And what we did then was put little boots on these legs, because this was a way to test if the legs were involved in sensing the temperature of the soil. 여기 보시면 부츠를 신으면 부츠를 신지 않았을 때보다 공 위로 올라가는 횟수가 훨씬 적습니다. So we described these as cool boots.