From Kant's "Critique of Pure Reason", his amazing proof using thesis and anti-thesis, hooked author to do similar thing. Thus beginning from thought, and thought processing, with conflict of thoughts and examining various terms, an attempt to know about the term 'Identity' and 'Existence' has been made, also with the word 'Cognition' defined as more rigid to specify an state of any certain body has been attempted, and finally coming to Kritima's Equatorial Constant and Equation. With poor proof-reading and the contents in the book, mingled with each other as per their necessity, author has finally attempted to define existence as ¿ I exist, for the least possible unit of time by which I can cognize my environment, until the laws of nature, offers me another least possible units of time, till my physical identity remains in cognizable form, for me as well as observers observing me.¿ and attempting to answer other questions by the help of Probabilistic Argument, "I guess, I don't know?/."