Brother WP looks like it sells for ~$200 on eBay. But I think a mint Tandy 4000 would really be a museum piece ;) Going down to the level of a quantum maxwell

Brother WP looks like it sells for ~$200 on eBay. But I think a mint Tandy 4000 would really be a museum piece ;) Going down to the level of a quantum maxwell demon, a superconducting qubit, a single photon. One still finds measurable dissipation. An inherent non-linearity of optics in a medium. If the entire system could be constructed of light, manipulated by light energy. we could perhaps see a memory entropy lower than the systems ;)