I just read on the Internets that Global Warming is a Hoax!

[DetlefK]

2. His resumé is... weird.

"I’ve worked with the University of Florida to do some amazing things . . . I’ve helped make crop yields more productive for third world countries . . . I helped create an intermetallic coating for gun barrels that dropped maintenance requirements on firearms by half . . . and I’ve helped cure diseases."

crop-yields -> He has worked in the field of biochemistry or genetics.
intermetallic coatings -> He has worked with alloys, which means he worked with engineers and/or physicists.
cure diseases -> He has worked in biology or biochemistry.

And he's been at the job for 20 years. How does one go from biology to engineering???
If you are a professional in the field, you don't. You are specialized through the lectures you took, through the books and papers you read, through your years of experience in the lab. You can't just switch to something totally new, because you have neither the detailed theoretical knowledge nor the on-hand experience. There is no career-path from biochemistry to engineering or vice versa. There. Just. Isn't.

Which leads to the conclusion that he is more of a lab-assistant who hopped from job to job.