Earlier quoted context omitted.
You can say no and still help with a solution.
When I ask, "Is it possible to draw 7 perpendicular lines?" I want the answer, "No." If I want to know why, I'll ask why. If I want an alternative, I'll ask for it. Instead, what was happening was that after they asked their question and I answered, "no," they'd walk away and not attempt to get my help again with it afterwards. For the longest time, I thought they were like me and that they were looking to have their…
Depends. Are we assuming you can't draw in seven dimensional Hilbert space?