

Should be trivial to set up something like that if you’ve got parts you want to work with. Any desktop with an automatic background switcher should be able to cycle through images in a directory you specify on a timer. Set up your favorite remote access software (SSH, Samba, NFS …) and you’re done. If you want more control over the behavior, you could script up something custom with a little more effort – but it’s still not particularly hard to implement something like that.
Watch out for burn in on the screen if you’re leaving it on all the time.






No, we are communicating. People can coordinate their actions to achieve things that are impossible for an individual. We obviously don’t have perfect shared understanding, and miscommunications are not uncommon (as others have already pointed out) but we can exchange enough information to do useful things.
Also, we can make jokes. The fact that it’s possible to craft a joke and make someone laugh by setting up and intentionally subverting expectations through language is pretty good evidence that we have shared understanding and similar processing.