[ExI] fermi question alive and well

Will Steinberg steinberg.will at gmail.com
Fri Mar 29 14:55:29 UTC 2019

On Thu, Mar 28, 2019 at 3:45 PM John Clark <johnkclark at gmail.com> wrote:

> >
>> *When it comes to ET, I don't think we know precisely what we are
>> looking for or how to go about looking for it.*
> We are looking for a civilization that makes use of high frequency light
> and outputs low frequency light as a waste product, and we know exactly how
> to look for it, with infrared and microwave telescopes, but we've never
> seen even a hint of it.

An ant looking only for giant anthills would find no evidence in their
opinion of our civilization.

1) Alternate energy sources/entropy sinks which we do not yet understand

2) Deliberate cloaking

The second might be more likely.

"We know exactly how to look for incoming enemy planes, and we don't see a
hint of them", then a stealth bomber came and blew up whoever said that ;)
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