* The rock cycle is a continuous process, but not a strict timeline. Rocks can be locked in a particular stage for very long periods. For example, a granite rock deep underground might remain unchanged for millions of years.
* The rock cycle is influenced by external factors. Things like plate tectonics, erosion, and weathering determine how quickly and how much a rock changes. A rock at the surface might erode quickly, while a rock deep underground might be largely unaffected for millennia.
* Some rocks are formed in unique ways. Rocks like meteorites and some metamorphic rocks formed through events outside the typical rock cycle. They might not go through all stages of the cycle in the same way.
Think of it like this: Imagine a river. Water constantly flows through the river, but not all drops of water follow the exact same path. Some might flow quickly, others slowly, some might even get stuck in a small pool for a while. The rock cycle is similar - it's a continuous process, but rocks can take different paths and spend different amounts of time in each stage.
