[panarky]

Let's say you post an image, and I learn something by viewing it, then you delete the image. Is my memory of your now deleted image wiped along with everything I learned from viewing it?

[dylan604]

I have seen plenty of images on the internet where I would gladly accept this as thing. Unfortunately, what's been seen, can't be unseen.

[opello]

Unfortunately computer memory, unlike your memory, is so easily wiped. Having the infrastructure in place to make sure it happens on the other hand, seems more like human memory.