In reply to ExiledScot:
> I think it depends on your experience and ability, for climbers we can get up many routes using balance alone as long as there are sufficient footholds. It's easy for a good climber to say they can balance across a graded ridge hands free. But that's not the standard for scrambling, it's the point at which most hill walkers would be resorting to hand holds, not simply fending off to keep their weight over their feet as a good climber would. That's why many grade 1s are graded as such, despite just being a bit of a steepish rocky walk to a climber.
True, but I don't think that a definition of something can depend on individual differences, it has to be more absolute. A possible definition could be, you're scrambling if you could touch the ground with your hands without bending at the waist. That doesn't mean you have to use your hands, but you could.