An expert is a man who has made all the mistakes which can be made, in a narrow field.

Once upon a time there was a genius scientist, Niels Bohr. He was so smart that he could solve any problem with a single atom! He was so brilliant that he could see the world in a totally different way than anyone else. One day, he was working on a theory that would explain why atoms behaved the way they did. After months of hard work, he finally came up with the famous Bohr Model. The Bohr Model was so revolutionary that it changed the way we think about atoms forever! But, it wasn't without its flaws. It seems that no matter how hard he tried, Niels couldn't get the model to work perfectly. He would often joke that "Atoms are just too stubborn for me!" No matter how hard he tried, Niels Bohr never gave up. He was determined to discover the truth about atoms, and he did! So, if you ever find yourself struggling with something, just remember the story of Niels Bohr and never give up!