Are vague Ideas sometimes better than firm ones?

I rather like this thought about ideas from Pablo Picasso.

We don't necessarily need a clear, crisp, sharp idea or vision. A hazy one, a sense of vague direction may sometimes be better as we are then more likely to explore along the journey and make serendipitous discoveries.

Maybe vague ideas are at the heart of being creative.

You have to have an idea of what you are going to do, but it should be a vague idea.

Credit: Pablo Picasso