As seen on Reddit...
Scientists recently did a study on the effects the right side and left side of a brain had on counting. They first took out the left half of a man's brain and asked him to count to 10. He said, "2, 4, 6, 8, 10".
They put the left half back in and removed the right half, asking him to count to 10 again. He said "1, 3, 5, 7, 9".
Finally they decided to just go for it and removed the whole brain. They again asked him to count to 10 one more time.
The man said, "Look. I'm great at counting to 10, ok? I love numbers and I have the best numbers. No one has better numbers than I do. My 4th grade math teacher -- and let me tell you, she was the best and smartest math teacher in the country at the time -- my 4th grade math teacher said to me that I am the best counter she's ever seen. The best. So if you want me to count to 10, let me tell you I can count to 10 alright. That's no problem. I will do it. I will. And I will do it better than any has ever done it before, ok?"