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Probably a lot of similar images that show ridiculous situations are actually set ups meant to poke fun.On the theme of critical thinking, it appears the photographer responsible for this image, a fireman in Belgium, stated it was intended as a joke. A search of "fire hose across railroad tracks" leads to several websites with similar stories:
"Hey, this past week our funny photo went viral throughout the whole world. Thousands of shares and likes in many different countries! Once and for all: the picture was taken in Belgium, in a small village called Bornem.
"After a minor intervention, we had some time left near the railway to make this picture. Since there were no trains running at all for a week due to maintenance works, we can state that our joke was a real success! Thanks to our entire team, 2nd sqdn Firefighters Bornem!"
So while the current teaching of critical thinking may not be up to snuff - the world still has a sense of humor.