ATDTDA (5.1) - The Etienne-Louis Malus

[Ya Sam]

>Maybe the only scientific point essential to grappling with AtD is that for
>a ray (beam, wave, photon) of light,*there is no time.* In your reference
>frame you say it "takes a year" to get from point A to point B a light-year
>away; in its own reference frame, that year -- and the every other year 
>from
>the Big Bang to whatever the end may be -- is one instant. Not one instant
>of many -- the only one.

But that would be a very long instant if we're talking about millions of 
light years, right?
Now I'm on the swampy ground here,  but if I get it right the speed of light 
doesn't depend on the speed of the observer (Mickelson-Morley) but we can't 
do without the observer, so sh/e becomes part and parcel of modern physics. 
Then, if a photon turns out to be a sentient critter and thereby an 
observer, what would it observe, if anything?

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