Rogue Polymath has been my online persona for many years, but I've always had trouble explaining it to other people.
I would usually go through the definitions of what's a rogue, what's a polymath, and then combining the two. For example, a rogue is someone who goes against the status quo and a polymath math is someone who is knowledgeable in many subjects. Therefore, a rogue polymath would be someone who challenges the status quo from many different perspectives. It makes sense to me, but maybe it doesn't to you. Besides, it never seemed to flow very well.
Now, I'd like to try something different. I want to explain rogue polymath by talking about what the opposite would be. The opposite of a rogue polymath would be a complacent specialist. Here's someone who is very content with the status quo, even adverse to change (however small). They are sticking to an area they are intimately familiar with, their own little comfort zone. Either they are too cozy to try new things or too scared to leave their area of expertise.
But not you. You know that live is too short to specialize. You know that when things get uncertain, new ways of thinking and doing have the upper hand. You see the value of being a renegade generalist, a rogue polymath.
This is what Pamela Slim is calling a Body of Work.
What Jeff Goins is referring to as a Portfolio Life.
And finally, this is what Emile Wapnick calls being a multipotientialite.
I hope that clears things up a bit. Are you in?