How would visible habited planets affect technology?

I have two binary pairs of planets in a planetary system. All of the planets are habitable, and similar in mass and composition to earth. Each pair is identical, or nearly so. The planets are tidally locked, and if you stand on the point closest to the other planet about 10% of the sky is obscured by it. One pair is closer to the sun, along an orbit somewhere in between earth's and venus's, while the other is between earth's and Mars's orbit. These planets orbit a sun just like ours.

How would this affect technological development in general? How would it affect the development of technology? Would worlds make areas for transmitting messages and information? You can see the other planet with your naked eye, with a weak telescope you can probably make out more details, and with powerful telescopes you can see the more distant binary pair.

Note - All planets have human intelligent life (if you can call humans intelligent) developing at similar rates. Also, the different planets would not have languages in common in the beginning.

posted about 8 years ago

Xandar The Zenon‭

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