Don Knuth at Stanford University collects signs.
Actually he collects photos of signs, especially the diamond-shaped informational-warning signs.
What in the world is this one?
A sign photographed in Australia, in the Knuth Collection.
Your nominations for captions welcomed in comments.
More, sorta — or maybe, “tangentially related” is a better description:
Donald Knuth at a reception for the Open Content Alliance, hosted by the Internet Archive. Taken October 25, 2005 by Jacob Appelbaum in San Francisco. (Wikipedia image)
- Don Knuth and the Art of Computer Programming: The Interview (adafruit.com)
- Can (and should) scientists become great presenters? (presentationzen.com)
- You might enjoy some of the other posts on signs here at Millard Fillmore’s Bathtub
Millard Fillmore's Bathtub 
[…] Signs: Cthulu’s return? Don’t kick jellyfish? (Millard Fillmore’s Bathtub) […]
LikeLike
It’s actually a warning sign that Irukandji jellyfish are in the area. Except thats a freakishly large one – the bell is really about the size of a dime (though the tentacles can be up to a metre). The venom from the sting is 100x as potent as cobra venom, so if you ever see this sign in Oz, believe it!
LikeLike
[…] Signs: Cthulu’s return? Don’t kick jelly fish? (timpanogos.wordpress.com) […]
LikeLike
A warning that blue-ringed octopodes are present?
LikeLike
Squid Crossing.
LikeLike
Then don’t swim with the Jellys, silly Humans…
It is their Play Area P-)
LikeLike
Yellow just invites jellyfish attacks.
LikeLike
Silly me I thought he had a yellow swimming suit.
LikeLike
Notice how the man’s legs have already become separated from his body. Mean jellyfish.
LikeLike
Off leash Jelly Fish Play Area
LikeLike