Nomad-Teaching and being cool with it “Mr. Franz, I think careers are a 20th-century invention and I don't want one.” Says Christopher McCandless in 'Into The Wild'. This is before he sacks off “real life” and goes on a one-way trip to Alaska to live it out in the far reaches of the world. Love that movie. He’s got a point about careers, things have changed, not least in the domain of teaching. In 2021, in the US, the median tenure for workers aged 25 to 34 is 2.8 years. The