Quote from Charlie Dow:
First, common sense doesn't come in book form. Second, you are not going to like or understand the answer because it is not a subjective one but I will state it anyway.
In any type of "Problem Solving" scenario one needs all the data to come to a viable and accurate conclusion. By omitting any part of the data you are limiting the accuracy of the answer to the problem or question. The more data you arbitrarily omit the more you limit the accuracy of the answer.
I didn't get my experience or trading education from reading books, I got my experience from jumping in with both feet and learning what was consistent with price that made it tradeable with a high percentage of consistency. My background in corporate America was in a "problem solving" capacity so solving trading questions was a natural progression. If you prefer to manually manipulate the data to skew it to your needs, fine but do not think that it is in any way an accurate determination of trend or reading price action.