Lets say there is one being (it can as intelligent as a dog or an average human). But lets also give it/him a bit more unorthodox situations.
He/it doesn't need to sleep and eat. Nor also his cell decaying (so he would never aging and still always be on top of his condition).
He is stranded on a place that there is nothing there except sandy ground and peebles. It is limitlessly vast, and always basking on a gentle light, there's no night and day, like it always like early morning ambience. Weather change is also absence.
On top of this situations he just not going crazy, or desperate so he killed himself. He always looking for an activity to amuse himself.
The question is, could he evolve given a millennia or more time there? Can his brain develop more intelligence as the more time he passes there?
Edit : @SRM answers that by word definition of evolving itself i got wrong. What I really mean is can he changing/developing/mutate over unlimited time?