>statistical rank of the concepts that interest us<

Please, Anna..
I have been interested in statistics for a long time, more as a game than anything else, but I have come to the conclusion that, as a means to find out what it essential or important in our life, it has done more harm than good! I find it even less suited to EXPLAIN things: begging the question is the usual outcome. Progress and creativity is more often linked to what's improbable, unlikely and unpredictable.
So why not let this river of thoughts carve its own bed? In any case it's never twice the same when you enter it.