What if they anesthetics simply paralysed you, rendering you unable to respond to pain, while temporarily interfering with your ability to form new memories?

What if they anesthetics simply paralysed you, rendering you unable to respond to pain, while temporarily interfering with your ability to form new memories? The drug Versed is supposed to do this. For example patient complaints see http://versedbusters.blogspot.com/ http://versedbusters.blogspot.com/ and the comments on that page.