what v i intended to explain is .......EVERY mathematical FUNCTION is reversible and AES is nothing but a bunch of mathematical operations ..... and can be REVESED . and if we talk about a hashing algorithm it means we can find a specific x having two images f(x) and this is what we call an application like the equation of a cercle .... cudnt be reversed back but we can make assumptions of eventual solutions....... whish i culd explain sthig.