Once upon a time there was a very smart young boy named Mycroft. Although he was nearing his sixth birthday, he had no playmates, at least none that could match his startling intelligence, but then, his mother became with child, and in time she gave birth to a son whom she named Sherlock.
The child grew very fast, and it soon became clear that he too was very intelligent. The boy took great pleasure in his brother and took him with him on walks around the grounds of their house, but Sherlock was curious, and reckless. He got into danger often, and the boy had to save him again and again.
One day, after Sherlock had fallen into a stream and almost drowned, his mother made an ultimatum.
"Mycroft, you can't keep taking Sherlock out into the world. At this rate, he will meet with a sudden death before the age of three. Every day I expect to find him mauled by a dog, bitten by a snake, or knowing his luck killed by a crocodile after sneaking into the zoo. He's going to have to stay inside!"
So Sherlock was taken to the country home where he could be well guarded. He was surrounded by nurses, servants, and every luxury, but he was not allowed to leave the house's boundaries.