More on the IT Implications of a Grexit. Spot on. Most people have no idea how hugely, ridiculously, intimidatingly complex banking and insurance systems are. (Note: I have worked in banking and in insurance, in IT.)

And how thoroughly they must be tested before any changes are made.

Bill Mitchell sounds like a real tool who doesn’t actually know anything about IT at all.

Anyone who thinks that Y2K wasn’t actually a real problem with huge negative possible real-world consequences is a goddamn huge moron by default.

Y2K didn’t cause problems because millions of people spent billions of person-hours fucking fixing it.