It's hard to imagine he's not joking, but he aint.
Dixie clearly doesn't understand AT ALL the evolutionary concept.
People did not evolve from corn. No evolutionary biologist has ever suggested so. Continuing to say we did as a tactic to discredit evolution is a retarded straw man from a guy who doesn't know enough about evolution to know it's a straw man.
Oh, I understand the parts of evolution we have documented and observed. I realize that primates have changed over time, some of them have not changed much at all, and I can understand the same is true with plants and other living organisms, it all changes and evolves with time, to adapt to environment, to enhance stronger attributes, to ignore meaningless attributes, and over billions of years, changes and evolves. I get that!
What I don't get, is this silly and ridiculous argument that everything living, came from some universal original microbe! Nothing has ever been concluded on this, it is nothing more than silly superficial speculation, from people who have made it their life's work to destroy religious belief and denounce God. Mott will slather all kinds of long obscure scientific words on it, and pretend this makes it valid and legitimate, but it's just downright stupid on every level.
Plants live, grow, and function, with a completely different living system than warm or cold blooded animals. Photosynthesis is not used by other life forms, because they have their own unique and distinct operating systems. None of these living systems is interrelated in any way, they all operate on different principles, different chemical reactions, energy sources, etc.
It's a real stretch to consider warm-blooded and cold-blooded animals share commonality, but plants? There is no remote similarity whatsoever. We didn't come from plants.