Can something be said to exist when there is no way of observing or measuring it?<quoted text>
That is my posit....The evidence will be developed....It might be that my posit is part of the evidence. I will have to think on the symmetry of this a bit. But the evidence itself may be assymetrical.
Actually an electron is mostly space, so what are we apparently observing? I don't know.
Does one need evidence for a rational basis/claim?
This is actually two question.
In general, I think no for both, because one might use reason instead of evidence.
Answer: I could be led into a room blindfolded and hear someone turn a light switch. By reason I think it is either to turn it on or off. There is no evidence the light is on or off.
So the question is the light on, or off, I cannot determine and that there is no evidence?
If so, how can you really know that it's not just a part of your imagination?
Further, how can anyone else know except to accept your personal testimony. But then, if I accept your testimony as true, then how do I not accept everyone else's as also being true?
That would be utter madness which would leave one accepting claims of invisible fire-breathing dragons as readily as accepting any god claim.
No, I'll stick with what can be observed and/or measured.