You don't need a PhD, you just need the first few chapters of [Category Theory for Programmers](https://github.com/hmemcpy/milewski-ctfp-pdf https://github.com/

You don't need a PhD, you just need the first few chapters of [Category Theory for Programmers](https://github.com/hmemcpy/milewski-ctfp-pdf https://github.com/hmemcpy/milewski-ctfp-pdf) :)