Generations of students are desperately seeking an answer.
We must admit that in our daily or professional lives, very few of us use mathematics.
How can one attract children to a discipline which is often seen as "too abstract"?
Today, what are high-level mathematics?
What are their practical applications?
In order to answer these questions, our investigator meets researchers in pure mathematics, but also mathematical application users in the fields of computer science, biology and finance.