Having the opportunity to teach Theory of Knowledge for 20 years meant that I necessarily had to expand my knowledge well beyond what I had when I first started teaching.
I had university degrees in Linguistics and Secondary Education, along with the equivalent of a degree in literature, but for TOK I had to start learning an enormous amount about mathematics, science, human science, history, and the other arts.
My husband and I run a butterfly census and participate in a Citizen Science project through Cornell University tracking bird populations in our area, so I continue to develop my knowledge. I figure there is no such thing as too much knowledge!