Also as regards Right View and Right Thinking, understanding cannot of its own nature determine an object as "impermanent, painful, no-self, but with applied thought giving [assistance] by repeatedly beating [upon the object] it can.

How?

Just as a money-changer, having had a coin placed in his hand and being desirous of looking at it on all sides equally, cannot turn it over with the power of his eye only, but by turning it over with his fingers he is able to look at it on all sides;

likewise understanding cannot of its own nature determine an object as impermanent, etc., but with applied thought with its characteristic of focussing the mind and its function of striking and threshing, as it were beating and turning over, it can take what is given and determine it.

Therefore Right View only is included here in the understanding group as being of the same kind, but Right Thinking is included because of its action [of assisting].