anchor.diff:  	) select fairian_name, click, debit, credit, d-c as net 
               from running_total order by fairian_name, click;
   			
  - fairian_name | click |   debit  |  credit  |   net
  + fairian_name | click |  debit   |  credit  |   net    
   --------------+-------+----------+----------+----------
    alice        |     1 |        1 |          |         
    alice        |     2 |          | 0.059635 | 0.940365
    alice        |     3 |          | 0.056079 | 0.884286
    alice        |     4 |          | 0.052735 | 0.831551
  - alice        |     5 | 0.010046 |          | 0.841597
  - alice        |     6 | 0.009446 |          | 0.851043
  - alice        |     7 | 0.008883 |          | 0.859926
  -(7 rows)
  + alice        |     5 |          |  0.04959 | 0.781961
  + alice        |     6 |          | 0.046633 | 0.735328
  + alice        |     7 |          | 0.043852 | 0.691476
  + alice        |     8 |          | 0.041236 |  0.65024
  + alice        |     9 |          | 0.038777 | 0.611463
  + alice        |    10 |          | 0.036465 | 0.574998
  + alice        |    11 |          |  0.03429 | 0.540708
  + alice        |    13 |  0.02739 |          | 0.568098
  + alice        |    14 | 0.025757 |          | 0.593855
  + alice        |    15 |  0.02422 |          | 0.618075
  + alice        |    16 | 0.022776 |          | 0.640851
  + alice        |    17 | 0.021418 |          | 0.662269
  +(16 rows)
   --------------------------------------------
   
   The net column shows the running total of the difference between the
  -additions (debit) and reductions (credit) columns, thus for each row,
  -while the debit and credit columns show changes to health, the
  -net column indicates her actual health at that click in time:
  -it decreases through click 4 and then transitions to
  -improvement subsequently.
  +additions (debit) and reductions (credit) columns, thus for each row, while
  +the debit and credit columns show changes to health, the net column indicates
  +her actual health at that click in time: it decreases through click 4 and
  +then transitions to improvement subsequently.
   
   The rate of health improvement and deterioration are small percentage
   constants fixed when the game is initialized.
   
   Note that a 'Fairian'''s' net health value influences their ability to
  -perform skilled tasks, 'e.g.', a 'Fairian'''s' 'effectiveness' is
  -adversely affected by poor health and decreases their food production.
  +perform skilled tasks, 'e.g.', a 'Fairian'''s' 'effectiveness' is adversely
  +affected by poor health and decreases their food production.
  +
  +=== Stationary Zero Health Status
  +
  +The third case, 'i.e.', when a 'Fairian' enters a click with exactly one food
  +unit, results in no change to health status. In the particular circumstance
  +of zero health and being a sole cultivator of a land plot, health status
  +remains at zero. 
  +
  +=== Emerging from Stationary Zero Health Status
  +
  +There are three ways to emerge from stationary zero health, and they all
  +involve, as a necessary condition, a food surplus.
  +
  +
  +[horizontal] 
  +Buy Food:: Maybe the most straightforward means of emerging from
  +stationarity is to buy food. This works, of course, only if other 'Fairians'
  +have generated a food surplus and are willing to sell some.
  +
  +Sell Labor:: Another means is to hire on as a supplier on the labor market.
  +Provided that the work site is being cultivated by at least one other 'Fairain'
  +with non-zero effectiveness, you will share in the fruits of the combined team
  +effectiveness and get a share of the excess production.
  +
  +Buy Labor:: Similar to hiring out as a supplier as above, you can alternatively
  +hire another 'Fairain' to jointly cultivate a land plot you own. Provided they
  +have non-zero effectiveness, you will similarly share in the fruits of the
  +combined team effectiveness.
  +
  +
  +
  +
   
   == Fairwinds Game Tutorial 9 - We Have Company
   
  
positive.code: --------------------------------------------
  fairwinds=> select click, debit, credit, description
                   from food_journal
                   where fairian_name = 'alice' and click>20;
   click |  debit   |  credit  |                         description                         
  -------+----------+----------+-------------------------------------------------------------
      24 | 3.012545 |          | total production from land 356a192b7913b0
      24 |          | 1.003136 | supplier production share paid from contract fe5dbbcea5ce7e
      24 |          | 1.003136 | supplier production share paid from contract b1d5781111d84f
      24 |          |        1 | daily sustenance
      24 |          | 0.000205 | spoilage
  (5 rows)
  --------------------------------------------
  
  
  
negative.code: 
   fairian_name | serial_number  | expiration | price
  --------------+----------------+------------+-------
   alice        | c1dfd96eea8cc2 |         29 |     0
  (1 row)
  --------------------------------------------
  
  