We first review and critically examine some basic concepts and ambiguitiesrelated to quantum mechanics and quantum measurement to understand the successand shortcomings of current theories. We also touch on ideas regardingexpression of variables within a complex system. Then we discuss a model forquantum measurement proposed by us, in which the quantum system is allowed tointeract with its image created within the detector, followed by a firstpassage random walk in the Hilbert space. Definitions and ideas from the firstpart are used in the context of the model. In the end, we discuss the puzzlingquestion of entanglement. We propose how borrowing concepts from our model forquantum measurement may enable us to formulate a hidden variable scenario thatdoes not violate Bell's inequality.
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