1. dianoetic, discursive -- (proceeding to a conclusion by reason or argument rather than intuition)
2. digressive, discursive, excursive, rambling -- ((of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects; "amusingly digressive with satirical thrusts at women's fashions among other things"; "a rambling discursive book"; "his excursive remarks"; "a rambling speech about this and that")
1.
I had not got far into it, when I judged from her looks that she was thinking in a discursive way of me, rather than of what I said. - from Great Expectations by Charles Dickens