In Griffiths "Introduction to QM", in the beginning it is said:
"Bell showed that it makes an observable difference if the particle had a precise(though unknown) position prior to the measurement".
Is this statement implying that in reality (whatever is meant with reality) the particle/quantum system has a definite position in space, but practically, because of our inability or call it whatever you want, we use probability to make claims about the location of it ?