As you focus your mind on a particular subject, you start to flow energy towards it. The purer your thoughts are upon a topic, the more powerful the energy flow and the more powerful is the resulting thought form that is created.

This thought form vibrates at a certain frequency and as you focus on it more and more, you start to gain vibrational access to other information on a similar vibrational frequency to that thought form. It is similar to how a tuning fork at a certain note causes other tuning forks of that note to start to vibrate too even though they might not be connected in any physical way.

This information flow between thinker and subject is what you could call insight.

So, to sum up, focus your mind clearly on a subject that you wish to gain insight about - the early lessons of The Master Key System are all about enabling you to concentrate your mind in this non-resistant, relaxed fashion.

Sooner or later, the insights that are coming to you while in this state will reach a point where the solution to your problem will become clear, or the next step in your endeavor will become obvious.

I believe this is what is intended by the term sufficient insight - and I think that the exercise that is being given is an exercise in being able to concentrate clearly enough (in the way I've mentioned above) on gaining insight into the fact that knowledge without an accompanying application of focused thought (the ability to think) is of little value.

I hope this is clear.

Insight is intuition, how do you increase insight?

This part of lesson 15 of the master key system points out that knowledge of something is very different to be able to put it into action and use it, an analogy would be like you know that circus tightrope walking exists but you haven't yet learn't the skill of how to walk tightrope

the only way you can learn tightrope walking is by determined conscious effort, similarly simply knowing that "thought is creative" is not enough, it takes conscious application to put it into action.

Unused knowledge passes from the mind, however intuition allows you to access some of this unused knowledge. About 16 bits of information flows through the conscious mind every second, 40 million bits of information flows through the subconscious part of your mind every second and is mostly unused by the conscious mind.

Virtual viewing is a practical way of diving into that vast flow of subconscious information, it's a way of reaching your hidden skills and abilities, that untapped mental potential. It allows you to access information past , present and future and get more accurate information and a broader perspective on what is available to you at any moment and puts you in deeper touch with your feelings and intuitions ... your business skills, relationships and overall development will improve.

In the following video Dr. Simeon Hein guides you through the virtual viewing process

http://www.youtube.com/watch?v=B5f_lJPvKtQ