t lower weight links not displayed here might play a significant role, especially since it seems that a certain number of inner-layer nodes without any ingressing link in the visualization do have a significant output link.

The other surprising aspect, is the similarity of the two networks. They both have a mainly positive component feeding an inner-layer node with a positive impact on the result. And a mixed positive/negative component feeding an inner-layer node with a negative impact on the result. The 