India, Aug. 15 -- Ask him whether there was a formula behind Sholay's massive success and writer-lyricist Javed Akhtar replies, "We try to rationalise and analyse everything, but sometimes, there is none. Charisma is an unknown factor that is very difficult to understand." One-half of the iconic writer duo Salim-Javed, he explains, "Agar mujhe malum hota, toh main dusri Sholay nahin likh leta?" How many times has he watched the film? "When it was released, I watched it five or six times because the initial reports were bad and I wanted to see how it turned out. Once it was re-released in 70mm, I watched it again. I haven't watched it since. I don't like to watch my old films." Probe further and the 80-year-old shares, "You should be happy with the work you have done. But that umbilical cord needs to be cut. You should think of what you need to do next, because you're only as relevant as your latest work. Those lost in history have no hope from the future."...