Once Einstein said
" Every action and motion is relative to each other nothing is absolute in nature"

you know, ye sb humari common lifestyle me bhi apply hota hai,
you know kaise, kyuki jina isi ka naam hai!!
Hm agar apne se upar kisiko dekhe to hme lgta hmare pas kuch nhi,
aur jaise hi apne se niche dekhe to lgta ki hmare pas kisi cheez...