As a connoisseur of the caution sign, I really enjoyed these gorgeous, strange, slightly disturbing safety posters from WWII-era Britain. There are stylized warnings about driving at night, about putting an eye out with that thing, about what happens if you are very imprudent with boxes, giant boards, and ladders, and then a jolly man who is ominously having way too much fun with a sort of compressed air power gun.

http://www.slate.com/blogs/the_vault/2016/09/16/modernist_british_safety_posters_from_the_middle_of_the_twentieth_century.html

Here is my new version of the “I didn’t protect my eyes” poster specially for Firefox developers,

And another very silly new poster for developers – based on World War II’s finest modernist art –

Really, I do love caution signs. They’re so earnest. They try very hard to be persuasive! Here are some from my Flickr collection of signs. This beautiful, detailed image of someone falling through rotten boards on a pier and then drowning helplessly is from the long pier at Aquatic Park in San Francisco.

This last one is from an old artillery testing range in Essex that you have to drive through before you can get to the incredibly dangerous and fascinating place, The Broomway. The Broomway is a submerged and mostly unmarked 6 mile long path through ocean quicksand, only usable at low tide. Did I mention the unexploded ordnance, the rapidly advancing tide, and the frequent heavy fog? Also, did I mention there is a tour that takes you over The Broomway on a giant tractor?! Sign me up!