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Devices for Dissonance :. Reflexive Modeling and Systemic Risk. Daniel Beunza & David Stark. Dissonance. Dissonance fosters discovery by prompting reflexivity. Dissonance. Dissonance fosters discovery by prompting reflexivity.

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## Reflexive Modeling and Systemic Risk

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**Devices for Dissonance:**Reflexive Modeling and Systemic Risk Daniel Beunza & David Stark**Dissonance**Dissonance fosters discoveryby prompting reflexivity.**Dissonance**Dissonance fosters discoveryby prompting reflexivity. Disagreement about what is valuablemakes it possible to discover new resourcesof value.**In the literature, disasters are traced to the behavior of**traders, depicted as 1) reckless**In the literature, disasters are traced to the behavior of**traders, depicted as • reckless • and as • 2) overly cautious (“herding”)**Processes that provoke doubt**can lead to overconfidence**This is a pipe organ in largest hall of Moscow House of**Music. Posted by Irina at 20:55 Labels: instuments, theatre**[a declarative speech act]**This is a pipe organ in largest hall of Moscow House of Music. Posted by Irina at 20:55 Labels: instuments, theatre**Performativity in economic sociology:**Financial models are not representations. They are interventions that format, shape, perform markets. Their use brings new economic objects (markets) into being. Models are market making.**A model is performative when its use increases its**predictive capabilities.**A financial model is not a representation; it is an**intervention.**The trading room is populated with devices for doubt.Traders**do not simply use models and devices that perform the market. They also create and use devices for reflexivity. This reflexivity is not exterior to (or above) the structures of socially distributed calculation but is an integral part of it.**Arbitrage is a (reflexively) skilled performance.**And this reflexivity is not of the individualbut is social and material.**Methodological constraint: a single morning at a single desk**in an abritrage trading room.**Calculation in merger arbitrage involves**• the dissonance between two sets of probability estimates: • probability estimates derived at the desk using proprietary models, databases, and instrumentation. • 2) “implied probablity” – the aggregate probability estimates of the trader’s rivals**a given trading desk makes probability estimates based on**models, proprietary databases, and instrumentation**The trader’s models and instrumentation are powerful**scopes for viewing the markets.**But scopes that reveal can also conceal. If you take your**model for granted, you can lose your shirt.**To avoid cognitive lock-in, the traders turn to**socio-technical networks outside the trading room.**The spread plot is a representation of an economic object**that does not have a price and is otherwise not observable, co-produced by the positioning of actors who use it to confront their interpretations and re-evaluate their positions.**$**Acquirer Target time Decoding the spread plot “Backing out” implied probability

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