(Follow this thread for live coverage all day...)
#complexsystems #economics
![](https://pbs.twimg.com/media/EI8aowdU0AAsqZ0.jpg)
1 Ground truth (objective reality)
2 Effective ground truth (what we agree on, whether or not it is accurate)
3 #Information can be collectively encoded in #networks
4 Outputs are a product of collective dynamics
@C4COMPUTATION right now
- SFI'S Joshua Epstein (@GeorgeMasonU) on modeling emotions at today's ACtioN symposium:
Santafe.edu/action
- @MelMitchell1
"For adaptive #systems, we don't know what #computation is yet. There has to be computation FOR. And I don't think that's thought about enough in CS."
- @C4COMPUTATION
![](https://pbs.twimg.com/media/EI8iAFqUYAEo2QA.jpg)
"The 20th Century definition is that it is a resource-allocation mechanism. That sounds somewhat archaic today. But as an actor within an economy, it's an NP-hard problem to know how to act."
- SFI's Rob Axtell (@GeorgeMasonU)
- @MelMitchell1
![](https://pbs.twimg.com/media/EI8kXHHU4AA3Q_1.jpg)
"I think you can beat humans and augment humans, but you can't explain humans [with neural nets]. This is all totally irrelevant to social science."
- SFI's Joshua Epstein (@nyuniversity)
- @C4COMPUTATION
![](https://pbs.twimg.com/media/EI8lsgnU4AImQW6.jpg)
@C4COMPUTATION on what we even mean by "error" in discussing #computation
SFI's Blake LeBaron (@BrandeisU) on the efficacy of zero-intelligence models in understanding collective behavior
![](https://pbs.twimg.com/media/EI8oZzHUUAAzh4l.jpg)
- SFI's Rob Axtell (@GeorgeMasonU) on whether we have to serve an ocean-plastic algorithm
Opening shot from Cosma:
"I don't actually think physics has lent that much to our understanding of the #economy. The repertoire is ridiculously too limited."
![](https://pbs.twimg.com/media/EI8wLcxVAAAM8CP.jpg)
@RMaria_drc on the importance of observing the #data for good #econophysics
![](https://pbs.twimg.com/media/EI8xpDGUwAAH27_.jpg)
SFI's @ole_b_peters (@LdnMathLab) on the relationship between #economics & #physics
![](https://pbs.twimg.com/media/EI8yMvhVAAAmwau.jpg)
- @RMaria_drc
About today's symposium:
santafe.edu/action
![](https://pbs.twimg.com/media/EI82OOsU0AEEbxW.jpg)
- David Wolpert
- @cshalizi (@CarnegieMellon)
- SFI's Joshua Epstein (@nyuniversity)
featuring @cmoncap @Scott_E_Page @rajivatbarnard & Geoffrey West
santafe.edu/action #complexsystems
![](https://pbs.twimg.com/media/EI9OCt3U0AEQdwl.jpg)
- @Scott_E_Page
#pluralism
![](https://pbs.twimg.com/media/EI9Pk_uUEAEYLmI.jpg)
@rajivatbarnard
![](https://pbs.twimg.com/media/EI9QxIXUcAAoJ8y.jpg)
- @Scott_E_Page
![](https://pbs.twimg.com/media/EI9T5YIU4AAdMxl.jpg)
- @cmoncap
![](https://pbs.twimg.com/media/EI9XvaxUYAEw3aQ.jpg)
- Geoffrey West
santafe.edu/ACTioN
![](https://pbs.twimg.com/media/EI9ZxA6UcAAgeI3.jpg)
- @EricBeinhocker
![](https://pbs.twimg.com/media/EI9hOrcUYAALvtn.jpg)
@JacksonmMatt on the Economic Architecture panel with W. Brian Arthur @EricBeinhocker @AKStanger
![](https://pbs.twimg.com/media/EI9ipeQUEAEBTFk.jpg)
- @AKStanger on modeling a #moraleconomy & replacing Homo economicus with Sapiens integra, which cares about maximizing positive externalities
![](https://pbs.twimg.com/media/EI9jZqIVAAA_6si.jpg)
- W. Brian Arthur
![](https://pbs.twimg.com/media/EI9k5yHU8AAB4FY.jpg)
- @JacksonmMatt
![](https://pbs.twimg.com/media/EI9l4NeUUAE1TH7.jpg)
- @EricBeinhocker
![](https://pbs.twimg.com/media/EI9ogFTU8AAOub8.jpg)
![](https://pbs.twimg.com/media/EI9zHDcVAAEpF1X.jpg)
- @honeybeecap on the delicate balance involved in actually applying unifying frameworks in the market
![](https://pbs.twimg.com/media/EI94XlTU8AAcGWn.jpg)
- @B3_MillerValue
![](https://pbs.twimg.com/media/EI95Tu5U8AAbVjX.jpg)
"We have a big gap between perceived risk and real risk."
- @B3_MillerValue
Santafe.edu/action
![](https://pbs.twimg.com/media/EI98o5-UYAEAsZi.jpg)
- @honeybeecap
![](https://pbs.twimg.com/media/EI-AvGZUcAA2ZjA.jpg)