As some who studied statistics, using stats in a debate won't answer anyones question as they will interpret it in the way they want to. As was said to me in my first lesson. "A coin toss is 50-50. Or is it?". In my final lesson, the tutor mentioned if we could answer that same question. Not much agreement in the answer at the end. So make of that, what you will...
Has to be said though, the whole issue strikes of huge management incompetence that it still can't harmonise, it still can't get its training right, it can't keep hold of its drivers, it can't even get one of its senior managers to toe the line on social media which will no doubt be raising eyebrows at management level in other companies. After all, it's not as if no other companies have had to harmonise, such as XC/Central in the past. It would be very interesting to hear the opinion of high up management at other companies what they think of the mess at Northern. To do training without a rest day agreement to me would seem impossible, even at a smaller scale, not at the scale of northern changes.