If we want to communicate with other civilisations, it turns out that the laws of physics, the nature of interstellar space and a little common sense place surprisingly strict bounds on how this communication can take place.
My favorite bit:
In addition to this, says Messerschmitt, a good idea is to exploit the laws of physics and in particular Shannon’s mathematical theory of communication, which determines how much information can be sent to a noisy channel the certain power level. stop
Yes, to a noise channel the certain power level.  stop
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How to Design an Interstellar Communications System | MIT Technology Review
If we want to communicate with other civilisations, it turns out that the laws of physics, the nature of interstellar space and a little common sense place surprisingly strict bounds on how this communication can take place.
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+Shannon Dillavou, you might like to read this.
+Jason ON I did enjoy that article! Thanks for sharing.
Nice little article, thanks.