more on the spectrum "crisis"

David Isenberg was quoted in the recent NY Times article on the Spectrum "Crisis", which begins to examine the question if it is an artifact of old fashioned technology (it probably is to a large extent).  He has posted some additional comments on his blog - a must read if you are interested in this sort of thing

 

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My only quibble is minor and would only detract from his message ... "color" is manufactured in the brain and is sort of dependant on the frequency of a photon, but not strickly so ....  consider color mixing as an example)