From Eric Kvaalen, Les Essarts-le-Roi, France
Donna Lu reports that researchers have created a glass artificial intelligence (13 July, p 7). But their paper says only that they did computer simulations of what would happen to light inside such material.
They modified the distribution of areas with different indices of refraction in the simulation until they got the simulated material to behave in the way they wanted.
The editor writes:
The researchers respond that in the field of optics and AI, the computer model is considered to be an extremely high fidelity reproduction of the real thing. They do have plans to put the results into a physical object.
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