It is clear the field collapse and renormalization have something in common: they both arise because something happens at the single quantum level that is not described by QFT. Renormalization is necessary because QFT is not able to explain the way in which a field quantum interacts with its self-field. Field collapse is a mystery because QFT doesn't predict when or how a quantum will change its state or be absorbed. If one of these gaps should ever be filled, I believe that the other one may be also.
( Rodney A. Brooks )
[ Fields of Color: The theory ]
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