Optical Neural Nets Reborn

Lin et al "have created a 3D-printed artificial neural network that uses light photons to rapidly process information." This very cool device reminds me of  Weston and Von Foerster's Numa-Rete device from the 1960s at the BCL in Urbana (which Von Foerster told me was a favorite of John Von Neumann because it could even count doughnut-shape objects without error). News article @TheScientist and paper in Science.

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