A young dog was walking along a railway track when it was accosted by an old dog.
“Where are you going so thoughtfully?” asked the older dog.
“I am going to find out where the trains come from?” replied the younger dog.
“Isn’t that obvious?” said the older dog. “They come from where the railway tracks start in the distance where they meet,” continued the older dog, “they start at a point of singularity and continue to expand as they approach us.”
“Must be an interesting world out there,” said the younger dog, “might as well walk up there and find out for myself.”
“No, no,” screamed the older dog, “can’t you see that space contracts in all directions from where we exist? If you walk too far away, you may get stuck in the shrunken space or you may shrink to a point and never recover again.”
“Never mind,” yelled the young dog as it moved away, “ I shall bark once if I get stuck in short space and twice if I start shrinking into a dot; that way the rest of the dogs will know exactly what happens in the distance.”
“That idiot”, muttered the older dog, “will come back with new knowledge and make us old timers look like fools.”
Morals: 1) All dogs don’t bark in vain.
2) A repeatable illusion is not Science.
