Stephen King and Dean Koontz have been getting feedback from people and the market so long that their instincts are razor sharp and they have internalized a structure of stories and what will/wont move readers that they naturally lean on without having to puzzle things out the way a less accomplished writer would.
If you don't have that wisdom, trying to pants something is going to result in writing yourself in circles, contradictions, inconsistencies, incoherence of idea, etc.
Stephen King and Dean Koontz have been getting feedback from people and the market so long that their instincts are razor sharp and they have internalized a structure of stories and what will/wont move readers that they naturally lean on without having to puzzle things out the way a less accomplished writer would.
If you don't have that wisdom, trying to pants something is going to result in writing yourself in circles, contradictions, inconsistencies, incoherence of idea, etc.