Hello and good morning to everyone who is reading this.

And to everyone who is not reading this‒well, nothing, really.  It doesn’t matter what I say to the people not reading this, because, until and unless they actually read this, there will be no way for them to know what I am “saying” to them.

I suppose it’s possible that someone might read this blog post out loud to someone else, in which case the listener can know what I’ve written without literally reading it.  But, if you can consider listening to an audiobook to be “reading” the book‒and you can, though you’re not required to do so‒then that would count very much as the same thing.

It’s a bit like, for instance, the wave-front of the wave equation of a photon that was released from the last scattering surface of the early cosmos, just as the universe became cool enough for electrons and nuclei to join together and stop being plasma.

Imagine such a photon’s wave function progressing through the expanding universe, on and on, its wavelength increasing with the expansion of spacetime, red shifting and red shifting and red shifting.  What if it never interacts with anything else in the cosmos?  What if it’s never absorbed or scattered or reflected, “measured” by nothing but spacetime itself, on into the heat death of the universe, until there’s no longer even anything within its cosmic horizon with which it can interact?  Its wavelength stretches and stretches, perhaps eventually becoming light years in size*.  At some point it’s going to be completely swamped and washed out by the random quantum oscillations of the universe, even if that universe is immeasurably close to absolute zero in temperature.

Imagine such a photon given off by that last scattering surface and then traveling for a trillion years, a googol years, then for so long that a googol years seems as vanishing as a microsecond, never interacting, perhaps, until some version of a Poincare recurrence of the universe happens.  In principle, it might not interact even then***.  In what deep sense can that photon be said to be “light”?

It might even count as some manner of “virtual” photon, though certainly not the kind that is usually meant when that term is used.  It might seem lonely and depressing to be that photon, but we can console ourselves with the fact that, as far as any sensible notion of reality appears, photons have no subjective experience*****.  Even the absurd notions of panpsychism don’t literally imagine that photons are individually, actually conscious, in the sense of having internal “qualia“.

So, if I write something that no one reads, then what I have written cannot matter to those who have not read it.  Of course, in principle, all measurable remnants of even Shakespeare’s writing will someday be read and/or uttered for the very last time, but that’s different‒they will already have interacted immeasurably often before then.  The outcome will be nothingness‒or as near to it as possible‒but in the meantime, much will have happened.

Of course, according to quantum mechanics, quantum information is conserved, so everything from Hamlet to my imagined stray, lonely photon would be, in principle, recoverable.  But that’s a very rarefied “in principle”.

So, for those of you reading this, you really don’t have to worry about what people who have never read nor will ever read it will think about it.  They simply won’t have read it.  Likewise, I don’t have to worry about the reaction to my writing from people who don’t read it.

And, of course, if people “react” without ever having read a thing, which certainly does happen, those opinions are not worth considering.  I don’t need to take thought for some criticism of the Mona Lisa by a person who has never seen even any manner of reproduction or image of the painting.

Nor should I worry about being offended by the chattering of a squirrel in a nearby tree, or the noise arising from leaves stirred by the wind.  It’s merely noise, not too different from those quantum jitters that happen even in a region of the universe that’s as close to absolute zero as it can be.  There is always noise‒though it can become vanishingly close to silence (which sounds quite nice, so to speak).

Anyway, that’s enough of that.  I had a long day of walking yesterday‒about 15 miles total distance, and my joints and muscles still feel pretty good, so the shoes are all right******.  I did not walk to the train this morning‒I figure just a bit of recovery time is warranted‒but I may walk this evening.  I hope you have a good day, and that all your metaphorical photons have lots of interesting and enjoyable interactions before they dissipate.

What more could you reasonably ask?

TTFN

*That seems an interesting possibility.  What does it mean for a photon to have a wavelength measured in light years**?  If one wavelength takes a year to pass, is it really even a wave anymore?

**Okay, one can literally measure any wavelength in light years if one is so inclined, but for ordinary wavelengths such as those of more usual light, on the scale of nanometers and such, it’s a bit absurd.  One might as well measure the energy output of an LED bulb in megatons of TNT per second.

***Though, if it arrives at another “Big Bang” coming from the other direction in time, as I speculate could be possible, then it’s hard to see it approaching a state of new, lowering entropy from an impending region of inflation and another “last scattering surface” without actually scattering off the dense plasma‒and then our photon would end as it had begun, a quantum event going from the remnant of one Big Bang to another, countless years “later”****

****Though the notion of “later” might be irrelevant, since the directionality of time is determined by the direction of increasing entropy, and that would be inconsistent and reverse itself in my conjectured scenario.  It’s a bit like floating in intergalactic space and saying one is trying to go “higher”.  You can say it if you want, but it’s not really apposite‒it may even be the opposite of apposite.  Higher from one point of view becomes lower from another, even if one is traveling from planet to planet within a solar system.  Likewise for “later” and “earlier” when moving from one inflating region to another…if such a thing can happen, of course.

*****And they also don’t “experience” any passage of time internally…from the point of view of a photon, so to speak, it starts and ends instantaneously.

******That makes me wish I were wearing Keds, so I could honestly say. “The Keds are alright.”