KWED
Scratching head, scratching knee
Why not? It is god's final guide for all humanity , the means by which they avoid hell. Why wouldn't he make it straightforward and literal?Because Books of God is not to just say things straight forward and literal.
But because of the confusion and ambiguity, no one knows what "the truth" really is. They can only take a gamble and pick one of the many conflicting versions.They are written in a way that people "discover" truth in it, rather than they being told easily!
Have you never wondered why there are so many sects and scholars with different interpretations, all claiming the be the correct one? Is that really what Allah wanted? Centuries of disagreement and conflict?
What you are describing is an entirely subjective process. Which is why it has led to so much disagreement.Only if we make an effort, we discover more. Discovering happens through thinking about its verses, but with the intention of discovering truth, free from love and hate feelings.
They are not mentioned because the authors of the Quran had no idea they would be a thing.This is why, for example 12 Imams are not mentioned explicitly,
In which case, how do you know that they are referring to the 12 imams? (You can't)rather they are mentioned using metaphorical verses, those verses that no one knows its interpretation except God.