Planck frequencies as Schelling points in SETI

Tipping Points in Schelling Segregation

Thomas Schelling’s spacial proximity model illustrated how racial segregation can emerge, unwanted, from the actions of citizens acting in accordance with their individual local preferences. One of the earliest agent-based models, it is closely related both to the spin-1 models of statistical physics, and to cascading phenomena on networks. Here a 1-dimensional unperturbed variant of the model ...

Interpretive Economy , Schelling Points , and evolutionary stability ∗

I attempt to show that Kennedy’s (2007) Interpretive Economy principle follows from basic assumptions about cognitive prominence and evolutionary stability.

SETI home: Internet Distributed Computing for SETI

Project SETI: Machine Recognition of Squiggles in SETI Signal Data

The singular question, are we alone?, has boggled scientists for centuries. The SETI Institute operates the Allen Telescope Array (ATA) to observe star systems for radio signals which may provide evidence of extraterrestrial intelligence. Signal events that maintain an intensity above an empirically-set threshold across all frequencies are converted into spectrogram images through a sliding-win...

Quantifying SETI

It should come as no surprise to readers of QEX that the scientific Search for Extra-Terrestrial Intelligence (SETI, sometimes called the search for the ultimate DX) was initiated by, and is still largely conducted by, radio amateurs. The world’s hams instinctively understand the nature of electromagnetic communications, as well as the nature of the “free space” (or “aether”) that fills the voi...