I hold a Phd in theoretical plasma physics. Where I use it on a daily basis as a data scientist!! I specialise in differential equations of any description, where trying to find possible solutions using more obtuse methods is my version of "sudoku", In particular Lienard types.

That is all! That is all!

If anyone want to discuss things further please send an $\textbf{appropriate}$ email at robert.j.chin.at.gmail.com.