Thanks, we updated the link from https://twitter.com/LogoFoundation/status/760057041687830528.

Better but not great because the new link is not specific to this story. This is a better link

http://www.media.mit.edu/people/in-memory/papert

It was submitted but incorrectly marked as a dupe

https://news.ycombinator.com/item?id=12204756

Thanks very much. We've changed to that from http://el.media.mit.edu/logo-foundation/.