Apparently The Blue Part Of The Eraser Was Never Meant To Erase Pen Marks. Here’s What It’s For

#1 The blue end is meant for erasing pencil marks on heavy grades of paper or dark marks

#The soft end (pink/orange) is useful for light grades of paper which the hard gritted side would tear apart,

and also for precision erasing, such as removing a light stray mark from among dark marks.

#3 On grainy art paper, pencil marks are a pain to remove

The blue end of the eraser is tough and it doesn't wither away on being used on a more coarse form of paper.

We had always believed that the red part was to erase the writing, and the blue part was to erase the paper. But after this revelation, we thought that we had finally solved the mystery that had plagued our otherwise innocent childhood. And then we came across something that messed with our brains.

#4 Why is there a nib of a pen drawn on the blue side of the eraser? Is this a sign?

Just like a typical X-Files episode, the plot thickens.