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The advantages and disadvantages of these two types of charting, bar charting and point and figure charting, remain the subject of fairly good-natured litigation among their respective professional advocates, with both methods enjoying in common, one irrevocable merit.

They are both trend-following methods.

Even if we strip their respective claims to the barest minimum, the `` odds '' still favor them both, for the trend in effect is always more likely to continue than to reverse.