It's a phenomenon which a writer stumbles into once in a while. Basically s/he is not able to write anything. Somehow, the thought cycle which connects to words resulting into something meaningful is broken. In other words, Monday blues. Unable to work. But this is little different with a writer. In an office, there will be an external enforcer (a Boss, in fancy words). But with a writer, it has to be a force within. An Intuition. But that's the thing, right? The urge, the motivation, the intuition, at times, just fades out, once in a while. When the linearity of life just stops bothering you. You fall in love with the concept of dormancy. Basically you become a couch potato (Until your mom starts to scold). But I feel, sometimes this block is a necessity. In terms of industrial engineering, it is called mandatory buffer. A system should never be run at its max capacity all the time, or it will fail. Just like humans. In life too, we keep figuring out what's next, all th