anchor.diff:  fairwinds=> select click, fairian_name, account, debit, credit, description 
   			from cash_journal where click >= 400;
   
  - click | fairian_name | account | debit | credit |        description         
  --------+--------------+---------+-------+--------+----------------------------
  -   400 | zachary      | bond    |  1000 |        | Issued bond b6692ea5df920c
  -   401 | gina         | food    |     5 |        | Sold food quantity 7
  -   401 | zachary      | food    |       |      5 | Bought food quantity 7
  + click | fairian_name | account | debit | credit |          description          
  +-------+--------------+---------+-------+--------+-------------------------------
  +   411 | zachary      | bond    |  1000 |        | Issued bond fc074d501302eb
  +   412 | gina         | food    |     5 |        | Sold food quantity 7 units.
  +   412 | zachary      | food    |       |      5 | Bought food quantity 7 units.
   (3 rows)
   --------------------------------------------
   
  
positive.code: 
   click | serial_number  |  debit   | credit |              description               
  -------+----------------+----------+--------+----------------------------------------
       4 | 356a192b7913b0 | 0.000725 |        | land improvement based on cultivation 
       5 | 356a192b7913b0 | 0.000724 |        | land improvement based on cultivation 
       6 | 356a192b7913b0 | 0.000724 |        | land improvement based on cultivation 
       7 | 356a192b7913b0 | 0.000723 |        | land improvement based on cultivation 
  (4 rows)
  --------------------------------------------
  
  The rows resulting from this query show that during each of clicks 4
  through 7, the productivity improved by a small amount. The behavior of
  land productivity is very similar to the way proficiency changes as a
  'Fairian' engages in activity: when land is cultivated, the productivity
  improves, and when left fallow, the productivity diminishes. And in both
  
negative.code: 
   fairian_name | expiration | quantity | price |    unit_price     
  --------------+------------+----------+-------+-------------------
   james        |        465 |       11 |    15 |  1.36363636363636
   ingrid       |        465 |       10 |    15 |               1.5
   gina         |        465 |        9 |     5 | 0.555555555555556
  (3 rows)
  --------------------------------------------
  
  