On a scale of one to ten, ten being the greatest, which one do we want to choose? Most people would go for seven

One is no doubt the worst that people avoid being, and ten is what most people fear being that they could (see Courage for beautiful things). 

Most of the design didn't work because people choose to settle with mediocre - not dealing enough with the subject matter. 

One common problem is that the question is vaguely asked in the first place. 

And then the solution is half-way unsolved. 

In between leaving a problem unsolved and not solving a problem lies not addressing a problem. Either way does no benefit to the design at all. Worse, it deals damage. 

In most of the time, design solution is based on design knowledge and experience built in a long time ago before a design brief even exist yet.

It is just like a professional design course that doesn't take one day to graduate. And it takes five years to complete an architecture course in most of the country.

So, on a scale of one to ten, ten being the greatest, what do we want to choose? Sometimes, all we need is just "more time".