Slide 5, line 2:
"The ciphertext is the data we evil people get to see." [emphasis added]
(Admission that there is something to the beef with the old BSD logo ? ;-)
Thank you for the guide - the dos/don'ts, from someone who knows, are exactly what's first needed in this minefield.
(And Muphry struck me too - it's in page 6. I double checked the number and then typed the wrong one ...)