Board Thread:General Discussion/@comment-35923830-20180619052509

I did tons and tons and hours of research into this and this all adds up. First, sans machine is a

Time machine due to obvious references, but you already knew that. It's purpose, however, remains a mystery. Until now.

He likely invented it to go back to the war and try to avert it. The machine was not invented by W.D. Gaster because the only person with a powerful enough soul to remember gaster is asgore. Otherwise, all traces of baster are no longer relevant to the timeline. In genocide, sans admits to " trying to go back", but fails. My research also proves that sans knows about Timelines, which means that he found out that even if he averted the war, nothing would change in his specific timeline! He knows that frisk has the ability to reset everything, possibly the reason behind his apathy. 