“Scrum does not work and I won’t even give it a try!”
— anonymous ignorant
This collection of all the ignorant statements I have come across since I have been using Scrum should help you reply to similar statements in case you will ever be confronted with them:

“Scrum does not work because it is not fault-tolerant”
“Sprint reviews are a waste of time! Let’s skip them!”
“Daily Scrums are micro-management! Let’s not do this!”
“Scrum is waterfall because you are working on stories consecutively!”