You will find that past a certain point, it splits into the Blue and the White Nile. Also when it enters the delta near the Mediterranean coast, it splits into innumerable rivulets. It is also know by different names by different tribal groups.

So which is the real Nile?

I think again there is a challenge here to understand the meaning of Heraclitus, who not for nothing was called 'the riddler' and 'the obscure'. He is speaking in metaphors, and also saying something about the limitations of human logic. For to say that something both is, and is not, is a direct challenge to what come to be known as the laws of thought, which rely on the fact that something either is, or is not. Hence, 'the riddler'.

The aim of the philosopher was to understand the principles which underlie all existence. Talking some poetic license: people take for granted the solidity and reality of their day-to-day existence, as if what they know today will obtain tomorrow, and what they have today will endure. But experience teaches as that a great deal of what we know and possess is transitory. Death devours all. The aim is to find that which is enduring, beyond the opinions and fixations of the common folk, beyond ephemera. Whereas the Platonic cosmology projected this into the idealized 'changeless superlunary realm', Heraclitus sought it in the midst of the great flux of nature.