Japanese version of <a href="https://en.wikipedia.org/wiki/Brain_in_a_vat" class="extiw" title="en:Brain in a vat">en:Brain in a vat</a>. Famous thought experiment in <a href="https://en.wikipedia.org/wiki/Philosophy_of_mind" class="extiw" title="en:Philosophy of mind">philosophy of mind</a>
me, <a href="//commons.wikimedia.org/wiki/User:Was_a_bee" title="User:Was a bee">user:was a bee</a>
Vector data of the brain is from <a href="//commons.wikimedia.org/wiki/File:Central_nervous_system.svg" title="File:Central nervous system.svg">Image:Central nervous system.svg</a> made by <a href="https://en.wikipedia.org/wiki/User:grm_wnr" class="extiw" title="en:User:grm wnr">grm_wnr</a>.