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President Reagan's call on the scientific community to construct defences against hostile nuclear weapons may not be pure Science fiction. But it is a dangerous line to follow.
In June 1981, aircraft of the Israeli Air Force bombed the Iraqi research reactor 25 km from Baghdad and put it out of action. Richard Wilson, head of the Physics Department at Harvard University, describes a recent visit.
Is the notion that successive measurements on an isolated quantum system will yield the same result an axiom of the quantum theory or a consequence of it? This old argument has now resurfaced.
