Process control, data science, human factors.
Also some guitar, synth, beer brewing and other random obsessions.
[ my public key: https://keybase.io/chthonicdaemon; my proof: https://keybase.io/chthonicdaemon/sigs/cv30E-O3iqFFk4iStynruy-GsTYQqXcpmvU8JrOtDqc ]