When the arcanum of the first block is greater than the second, the vector points downwards. The system reads this as a descending stretch: the person has less of an engine of their own, and development does not start by itself.
In practice this looks like an even attitude to achievement. Not laziness in the everyday sense, but the absence of an inner demand to grow: what there is, is enough, and external incentives work weakly on such a person. For them to take on something big, someone close by usually has to put in a great deal of effort.
The other, underrated side is staying power. The descending vector tolerates monotony and long repetition well — that is, precisely what the ascending ones fall apart on. The strengths here appear where the job is not to change but to hold.