szczys writes: The screen on that new cellphone has amazing pixel density, color vibrance, and refresh rate. The high-end headphones you just picked up do an amazing job reproducing sound. These devices interface extremely well with humans but might not be very good modes of communication for an Extra-Terrestrial Intelligence. Sure, we haven't made contact with alien life yet. Even if they did pick up our broadcasts or space probes the relatively narrow-range of audio (narrow and low frequency), visual (slow refresh rate), and data transmission methods are likely to make no sense to non-human entities. The Voyager Golden Record took a fascinating approach to making some data available to new civilizations; it's interesting to think of other ways we might communicate with beings of fundamentally different biology.
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