Eric, Georgina, John
I enjoyed Eric's explanation in answer to Georgina's comment.
John I started reading through the Carver Mead link you provided with great interest. And then it hit me that the page was on Caroline Thompson's website .
Please allow me a few personal words about her - we corresponded in the early 2000's by the then rather novel (for me) medium of email. She was a computer scientist associated with a Welsh university and had taken a keen interest in physics. Like many of us she could not accept the weirdness of Quantum physics, particularly the idea of entanglement without local causality in Bell's Theorem. When I read her claims about Einstein not being original or even wrong, I was aghast, but through corresponding with her - mainly about our common belief that there were "only waves" in nature, I came to realize that Einstein was indeed not sacrosanct . By the time I had published my Beautiful Universe theory in 2005 in which I presented a picture of energy transport that precludes a point photon, and explained probability as diffraction in a universal ether, Caroline was very sick but did not mention it to me - she passed away in 2006. She disagreed with my model, but we continued a friendly correspondence till the end.
We can all learn from her courageous example to seek out and engage whoever she can get to listen to her views in the physics establishment and not get discouraged. Eric, have a look what she says under the link "Suggestions for Experiments": " 'Photons' [her quotes] get split at beamsplitters" . Her explanation of why they do differs from our shared views (because it is a wave), but nevertheless she had the right instincts to question what was deemed beyond question. RIP Caroline Thompson.
Vladimir