Board Thread:General Discussion/@comment-27524978-20160210030742/@comment-26463202-20160522234230

But he does mention that Sans (being a human) uses the machine without taking precautions (i.e putting himself into a robot), thus suffering the consequences and losing most organic matter (not stated by him, but it could be that bones wouldn't be affected by this). He adds this up into Ness's dissapearance in the Halloween Hack.