Math use cases

One of the main questions I got when I started stydying Mathematics at the Università degli Studi di Genova from people was:

I do not like numbers in general, and why is Mathematics useful? Which are the applications?

And usually I answered something like:

There are so many. For example the mobile phone you are holding now is using a Fourier transform to decode your voice into a sequence of 0 and 1 and send it to the other side of the call.

There is a huge topic where Mathematics is changing (again) the world we live: privacy and cryptography.

I am writing this article mainly because I want to share the Cypherpunk manifesto.

I never imagined when I was studying Elliplic curves at my third year of University that they would become so important!