I think that’s good advice—look before you leap and all that….
On the other hand, once in a while an episode of plunging ahead can pay off, too!
The “No Diving” sign is at the middle of the rear of the image, and you’d have to be pretty alert to notice it underfoot when you’re there to swim, I think. Or craning your neck to check out the other swimmers (this is midtown Atlanta, after all)….