‘If you can’t explain it simply, you don’t understand it well enough.’
I wish I’d found this nugget of wisdom a while ago since it would have slotted nicely into the discussion in my last Game Design 101 article The Price of Magic.
Writing game rules is hard, and Mr Einstein has hit the proverbial nail on the head by highlighting that the only qualification needed to write a simple explanation of anything is a genuinely deep and meaningful understanding of the topic by the writer. Without that, the writer is on a hiding to nothing.
And I guess that goes for blog writers too.