> actually getting a <4.2K environment would likely require siting your computer in the Oort Cloud, Well actually you can just use multilayer sun shades made o

> actually getting a <4.2K environment would likely require siting your computer in the Oort Cloud, Well actually you can just use multilayer sun shades made of sheets of aluminized kapton like the James Webb Telescope. It wouldn't get it down to CMB temperature but supposedly some of the Oort cloud is already down to 4K so it should be possible to reach <4.2K with enough attenuation by a sun shade.