Liquid paper and Eraser

Mistake is mistake...
No matter how hard you tried to correct it,
It's still a mistake...
Things that had been spoken out,
couldn't take back...
because the respondent and other people maybe heard...
Unless he/she is deaf...
Things that had been wrote out,
couldn't be definitely be deleted/erase...
because there are some others witness have been saw it...
Unless he/she is blind...
Even though we use the liquid paper and eraser to erase off, it still couldn't hide the mistake have been done...
Weeks after weeks the mistake behind it will appear back again...