I does matter..
Scientists quantitized the energy of sound waves in air and found that it traverses vacuum as electrical impulses. So, every word we've said has made it, in some small way, to the boundaries of space as energy impulses. And while those typically dissipate as the square of the traveled distance, they are still there: so, every word you've ever spoken is essentially preserved forever.
Humbling, isn't it?
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Mark..
That's a cool explanation about how sound travels through a vacuum. Hadn't heard that one before (although I took several years of Physics in school).
Wanted to share my understanding about 'where sound/things go after being said'..from my Zen experience tho. It's basic to the Buddhist school called Abhidharma..which underlies all Buddhist philosophy BTW.
Buddhism is essentially atheistic..or agnostic at least. So the question of eternity or that things 'go somewhere forever' doesn't exist in Zen/Buddhism.
In other words..everything is regarded as impermanent and transient..and has no ultimately fixed form. So by that reckoning..everything we say or do persists only to the degree that we give it meaning/significance.
If we 'choose' to remember things..they can persist (in our minds anyway). But if we choose not to remember things..they eventually fade away. Hence..the 'impermanence' perspective/explanation.
Hope this doesn't appear too esoteric here. But have found that over the past 25+ years of visiting Japan..it's helped me to understand a little better how the Japanese mind works (majority in Japan are Buddhist oriented BTW)..and how they may tend to see things a little differently than we do in the West. Feel it's a less dualistic way of seeing things/phenomena..and potentially a more harmonious way of dealing with things (which we could all use a little more of nowadays..seems to me).
Cheers Al/Ichi