Add early example of value-propagational system

contents/english/5-6-⿻-voting.md

@@ -52,10 +52,10 @@ When background signals are completely uncorrelated and there are many of them,
 It is important to note, however, that these clean rules are only optimal when voters are perfectly internally unified and perfectly externally uncorrelated/uncoordinated.  ⿻ thinking cautions us against such simplistic models, encouraging us to perceive the social connections across individuals and organizations, though of course accounting for these within a voting system requires identity systems that can record and account for these.
 
 
-Another compatible approach that has gained ground in recent years is "liquid democracy"(LD).  This idea, which traces back to the path-breaking work of Charles Dodgson (a.k.a. Lewis Carroll, author of the children's classic *Alice in Wonderland*), who also first posed the question of weighting of votes for people holding multiple votes that helped inspire QV.[^Carroll]  LD extends the idea of proportional representation, allowing any voter to delegate their vote(s) to others, who may then re-delegate them, allowing bottom-up, emergent patterns of representation.  Such systems are increasingly common, especially in corporate and other for-profit (e.g. DAO) governance, as well as in a limited set of political contexts such as Iceland.  However, these systems have an unfortunate tendency to often excessively concentrate power, given that delegation often flows to a small number of hands.  This tendency has somewhat soured initial enthusiasm.
+Another compatible approach that has gained ground in recent years is "liquid democracy"(LD).  This idea, which traces back to the path-breaking work of Charles Dodgson (a.k.a. Lewis Carroll, author of the children's classic *Alice in Wonderland*), who also first posed the question of weighting of votes for people holding multiple votes that helped inspire QV.[^Carroll]  LD extends the idea of proportional representation, allowing any voter to delegate their vote(s) to others, who may then re-delegate them, allowing bottom-up, emergent patterns of representation.[^PICSY]  Such systems are increasingly common, especially in corporate and other for-profit (e.g. DAO) governance, as well as in a limited set of political contexts such as Iceland.  However, these systems have an unfortunate tendency to often excessively concentrate power, given that delegation often flows to a small number of hands.  This tendency has somewhat soured initial enthusiasm.
 
 [^Carroll]: Charles L. Dodgson, *The Principles of Parliamentary Representation* (London, Harrison and Sons, 1884).
-
+[^PICSY]: An early implementation of such a value-propagating system is exemplified by PICSY, pioneered by Ken Suzuki in 2009. While he initially developed it independently from Kojin Karatani, he later joined the New Associationist Movement. Ken Suzuki, *Propagational investment currency system (PICSY): proposing a new currency system using social computing.* PhD diss., Tokyo University, 2009.
 
 ### Frontiers of voting