I don't think the part about tests and comments is meant to apply to the whiteboard coding. It's in the section about coding on a computer.

Comments and tests? Are you serious?

I am told that the unit-test kool-aid has taken over the universe of common sense, and I respond: "surely not", and then this...

My position w/ something like Fizzbuzz to any level of developer wouldn't require much in the way of either comments or tests (or, if embedded in a larger system, bugs would be flushed out quickly)

Do you disagree?

That's why you need to bring some of those thin Japanese whiteboard markers.

http://www.jetpens.com/Zebra-Mackee-Wet-Erase-Double-Sided-M...