Where the controversy could be one of two:
1. The function is unnecessary on the modern wrist watch because wearing the watch performs the same function.
2. The tourbillon is misdescribed as a complication whereas it's a function (doesn't add any information to the dial)
But the kicker is the word that describes the cop with the taser.
tourbillon - already confimed by Matty to be correct
a - eh phonetically
challenging - the policeman
complication - from the complicated equation resulting in the chart and also Matty's reference to Denise Richards.