From my experience, I say that writing down and sketching ideas, be they strong or weak, always has advantages. The more, the better. To see if an idea is good or bad, it usually helps to put it on paper. Once we physically capture it, for example, in a sketchbook, we can let it go. After all, we can recall it at any time. By doing so, we make space in our minds for new thoughts. Moreover, new connections between ideas can emerge at another time. In this way, mediocre approaches often turn into brilliant ideas.
But Stephen King has an entirely different opinion on writing down ideas:
“I think a writer’s notebook is the best way to immortalize bad ideas. A good idea sticks around and sticks around.”
German rapper Sido said something similar. He doesn’t give bad ideas a second chance. If an idea for a beat or lyrics doesn’t catch him in the first few seconds, he drops it and searches for something else.
Each of us will find our method over time. For me, it still helps to jot down as many ideas as possible. However, sometimes I think of Stephen King and Sido. Then I try to filter out the thoughts in my head that seem to stick with me, this particular idea that sticks around and around. Perhaps we would be well advised to pay special attention to these.