Wo konsi heezy hai just ko katny see dard nahi hota?

Yeh baat sahi nahi hai, kyunki har zakhm ya chot mein dard hota hai. Agar koi cheez asani se kat jaye toh bhi dard mehsoos hota hai. Yeh misconception hai ke kuch heezy aisay hotay hain jo katnay se dard nahi hota.