Re: Continuing may not be irrational
"Scrapping the Nimrod replacement and later starting an entirely new procurement might be an example of that, as for all I know might be not continuing with Windows 10 Mobile."
"not continuing with Windows 6 - 7 - 8 - 10 Mobile."
It seems MS already has plenty of practice with sunk costs, and are determined to keep going until they get it... Wronger?