Well, I 'm stuck again. The concept of exactly how symmetry works is beyond my comprehension. I get the general idea but how to manipulate the equations to arrive at an obscure symmetry confuses me. I figure when I can teach the class, I understand it and I'm a long way from there now.
In the meantime another thought wandered thorough my mind. We can talk about space and points in a space but what does that mean? How are points in space separated? Is there an invisible grid outlined in all of space? Is there a minimum distance between points? Are they related to the Planck length? Even Einstein once considered the possibility of an 'ether' filling all of space. How much of the everyday world don't we understand at a fundamental level? Would that they taught that in school.
Tangled thoughts assure me that we're all on this flight together.
Dick
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