# Could entropy explain dark energy? [closed]

This was 3rd beer idea, so please bear with me. What if the universe was not actually expanding but the speed of light was slowing? Wouldn't that be indistinguishable to our observations? Either way we should see an increase in the redshift the further a light source is from us?

Suppose we're in a giant extremely advanced compute cluster, and the speed of light has to do with how long it takes data to travel between compute resources on the network/bus. As more data travels across this bus (entropy increases in the universe) it takes longer to reach its destination (speed of light slows.) This seems vaguely reasonable considering fundamental limitations past and present on computers of varying types, there's always a trade off between size of data and speed of access that has it's roots in physics.

So I know it's a bit wacky, but it sounds easily falsifiable to me, simply plot entropy over time and dark energy over time and see how well they correlate (or don't most likely.)

Can anyone help me test my armchair theory? I think that would be a fun exercise. I know dark energy has been plotted over time, but what about entropy, is that possible?

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## closed as off topic by dmckee♦Jun 25 '13 at 15:44

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"As more data travels across this bus it takes longer to reach its destination" I'm not too sure about this statement. Maybe this is just a quibble, but data will travel at the same speed regardless of how much there is. It just takes longer for the full data packet to be transmitted. – Ataraxia May 4 '13 at 17:08
Related: physics.stackexchange.com/q/62146/2451 , physics.stackexchange.com/q/2110/2451 and links therein. – Qmechanic May 4 '13 at 17:18
This seems related to "tired light" theories, first proposed by Zwicky nearly one-hundred years ago. Wiki tells me that these theories are on the "fringes of astrophysics", because they don't agree with experimental data. – innisfree May 4 '13 at 17:41
@ZettaSuro Well yes, excluding interference like packet collisions, it would travel at the same speed still, but my badly stated point is that it would be processed slower as the load increased. Latency of a packet can be defined as travel time + processing time at both ends. More data to process = longer processing time = larger latency. – Eloff May 4 '13 at 17:46
@innisfree well that would answer the question, if you could say why "tired light" doesn't agree with the evidence. – Eloff May 4 '13 at 17:47