A. van der Merwe and F. Selleri (eds.),

**Mladen Pavicic
**

*Department of Mathematics, University of Zagreb,
GF, Kaciceva 26, POB-217, HR-10001 Zagreb, Croatia;
mpavicic@faust.irb.hr; http://m3k.grad.hr/pavicic
*

** Abstract. **
A non-counterfactual proof of the Bell result for only two
fixed positions of detectors is given. It is also shown that the only way
to ascribe an individual quantum system a measured observable is to

**PACS numbers: **03.65.Bz

**Keywords: **
Bell's inequalities, quantum measurements,
quantum logic