99.9997% impressed

I am always 99.9997% impressed when I see predictions quoted with levels of accuracy that far exceed measurement error. Take for example the latest OECD prediction of a contraction in this quarter (according to the BBC):

For the UK, the OECD's predictions are a 0.03% contraction this quarter, and a further 0.15% next.

Wow, 0.03%. They can measure a massive economy like ours to that level of accuracy? That's impressive.

It's like believing that we can predict global temperatures to fractions of a degree.

Sometimes I think we should just take Excel away from people who really don't have any common sense skills when it comes to numeracy...