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If a thing can be definitively proven, then it is a fact. That neutrinos have mass was shown to be true, and shown to be untrue, then it can't be proven or at least hasn't been proven definitively. There are 100 centimeters in a meter, it is raining outside (or not), the shape of the wing is what gives an airplane lift, if you travel 100 KPH for an hour, you've gone 100 kilometers, all simple facts. What assumptions do they require?
If a thing can be definitively proven, then it is a fact. That neutrinos have mass was shown to be true, and shown to be untrue, then it can't be proven or at least hasn't been proven definitively.
There are 100 centimeters in a meter, it is raining outside (or not), the shape of the wing is what gives an airplane lift, if you travel 100 KPH for an hour, you've gone 100 kilometers, all simple facts. What assumptions do they require?
