A local-variable model yielding the statistics from the singlet state is pr
esented for the case of inefficient detectors and/or lowered visibility. It
has independent errors and the highest efficiency at perfect visibility is
77.80%, while the highest visibility at perfect detector-efficiency is 63.
66%. The model cannot be refuted by measurements made to date. (C) 1999 Els
evier Science B.V. All rights reserved.