I believe that everyone can learn enough about something to be proficient with it and that if you truly understand something, you can explain it in such a way that anyone can do it. Complication needn’t be the case in the majority of situations.My own specialties are many–I know a fair amount across a broad spectrum of domains. Philosophy is a personal favorite of mine, along with religion. If you need something I haven’t listed as a specialty, that doesn’t necessarily mean I can’t help.