| BPM = 87
| versions =The Line Begins To Blur<br>The Line Begins To Blur (Instrumental)<br>The Line Begins To Blur (''[[Beside You In Time (halo)|Beside You In Time]]'')
| live = [[Live: With Teeth]] through [[NIN 2013 Festival Tour]]<br>[[NIN + QOTSA Tour]]<br>[[NIN 2022]]}}'''"The Line Begins To Blur"''' is the eleventh track on the 2005 release ''[[With Teeth (halo)|With Teeth]].''The track leaked in February of 2005, along with "[[Getting Smaller]]" and "[[The Hand That Feeds (song)|The Hand That Feeds]]".
The last three songs on ''With Teeth'' seem to describe the protagonist's views of the world and the way things are going in it, i.e., the way he would like things to be going. In this track, he expresses how what he believed, along with that which he believed in, is changing, shooting off in radical directions. He speaks as if it was destined to be this way, as if he saw it coming all along. This song, along with "[[Beside You In Time (song)|Beside You In Time]]" and "[[Right Where It Belongs]]" can almost be seen as a prequel to ''[[Year Zero]],'' as they speak about corruption in man's heart, and the world changing, revealing something not before seen ("The Line Begins To Blur" definitely seems to lead up to the Resistance Theory, and [[Trent Reznor]]'s struggle coping with a world that has completely devolved around him, as the chorus says, "As far as I have gone/I knew what side I'm on/But now I'm not so sure/The line begins to blur… ").
"The Line Begins To Blur" made its live debut on [[2005/03/23 Fresno, CA|March 23, 2005]] and was played at the vast majority of [[Live: With Teeth]] shows until the 2006 summer tour. The chorus lyrics were often changed from "I knew what side I'm on" to "To know what side I'm on." This is seen on ''Beside You In Time.''
"The Line Begins To Blur" continued to make rare appearances until the [[NIN + QOTSA Tour]], but has not been played since. It was revived again for the [[NIN 2022]] tour.
==Lyrics==