Answer: None. A mathematician can’t change a light bulb, although he can easily prove that it can be changed….

Why the lame joke about Mathematics? PeakWisdomMedia

Because in the final part of the Zoom interview I wanted to publish for you that’s with Nick James who wrote Six Figures A Year In Info Publishing… he talks about how a young man from London, in his early 30s who has already generated over $1million US dollars with a book he wrote for high school kids to help them with basic Math.