Well talk about all over the place! I ran what I wrote through
   my favorite DDC classifier, and while the confidence of a
   statistical 1.00 for 120 Epistemology, Causation and Humankind
   was not much of a surprise to me, what IS a surprise is the
   subjects that show up in the "long tail": I NEVER had a tail
   this long before in anything I wrote, and I've written much
   longer things.

   DDC Confidence
   120: Epistemology, causation & humankind 1.00
   501: Philosophy & theory 0.00
   160: Logic 0.00
   360: Social problems & services; associations 0.00
   910: Geography & travel 0.00
   300: Social sciences 0.00
   620: Engineering & allied operations 0.00
   006: Special computer methods 0.00
   590: Animals (Zoology) 0.00
   370: Education 0.00
   000: Computer science, information & general works 0.00
   519: Probabilities & applied mathematics 0.00
   600: Technology 0.00
   510: Mathematics 0.00
   340: Law 0.00
   190: Modern western philosophy 0.00
   150: Psychology 0.00
   531: Classical mechanics; solid mechanics 0.00
   320: Political science 0.00
   410: Linguistics 0.00
   500: Natural sciences & mathematics 0.00
   027: General libraries 0.00
   200: Religion 0.00
   780: Music 0.00
   630: Agriculture & related technologies 0.00
   930: History of ancient world to ca. 499 0.00
   700: The arts; fine & decorative arts 0.00
   100: Philosophy & psychology 0.00
   660: Chemical engineering 0.00
   539: Modern physics 0.00
   612: Human physiology 0.00
   339: Macroeconomics & related topics 0.00
   022: Administration of physical plant 0.00
   400: Language 0.00
   331: Labor economics 0.00
   551: Geology, hydrology & meteorology 0.00
   570: Life sciences; biology 0.00
   338: Production 0.00
   004: Data processing & computer science 0.00
   621: Applied physics 0.00
   005: Computer programming, programs & data 0.00
   535: Light & infrared & ultraviolet phenomena 0.00
   580: Plants (Botany) 0.00
   541: Physical chemistry 0.00
   720: Architecture 0.00
   540: Chemistry & allied sciences 0.00
   516: Geometry 0.00
   001: Knowledge 0.00
   020: Library & information sciences 0.00
   310: Collections of general statistics 0.00
   515: Analysis 0.00
   306: Culture & institutions 0.00
   610: Medicine & health 0.00
   518: Numerical analysis 0.00
   025: Library operations 0.00
   332: Financial economics 0.00
   550: Earth sciences 0.00
   333: Economics of land & energy 0.00
   514: Topology 0.00
   520: Astronomy & allied sciences 0.00
   511: General principles of mathematics 0.00
   430: Germanic languages; German 0.00
   003: Systems 0.00
   336: Public finance 0.00
   330: Economics 0.00
   532: Fluid mechanics; liquid mechanics 0.00
   381: Commerce 0.00
   337: International economics 0.00
   512: Algebra 0.00
   530: Physics 0.00