A man buys two horses but he can’t tell them apart, so he asks the farmer next door what to do. He says to cut one of their tails off. So the man does. But then the other horse’s tail gets caught in a bush and rips off. So again, he can’t tell them apart again.
He asks the farmer for his advice a second time. He tells him to cut one of the horse’s ears. So he does. But then the other horse gets its ear ripped in a barbed wire fence.
Again, he asks the farmer what to do and he tells her to measure them.
He comes back and says: “Thanks for your advice. It turns out the white horse is two inches taller than the black horse
Excellent point. I’m reminded of this joke: