Big thanks for that. I'll give it a read. We've hit problems with ack in the past. So I thought we could add more acks to increase confidence. But it's never 1

Big thanks for that. I'll give it a read. We've hit problems with ack in the past. So I thought we could add more acks to increase confidence. But it's never 100% certainty. I'm sure this paper will help understand the issues.