Saturday, December 6, 2008

Big numbers

Zimbabwe was already beyond the basket-case stage when the world economy. Making matters worse - if that were possible - a cholera epidemic has broken out.

But, if you think that's bad, oh no. In this posting on the epidemic, hilzoy comes across this mind-boggling result of the crashing of the global economy:

As of Nov. 14th, Zimbabwe's inflation rate was estimated at
89,700,000,000,000,000,000,000%. (And no, my finger didn't just get stuck on the zero key: that is 89.7 sextillion percent.)
I find an interesting topic in recreational math to be the question of what are the largest useful numbers. For example, Skewes' number

\[10^{10^{10^{34}}}\]
is an upper bound in analytical number theory. One wonders at what point Zimbabwe's inflation makes it to the list.

4 comments:

  1. I leave this to the mathematicians in the blog world. What is their currency valued at?

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  2. I tried to explain to my son: a loaf of bread costing a Z-Dollar would cost 89.7 sextillion Z-dollars a year later. But the rate of inflation is also increasing at a sick rate (not quantified in the link).

    I think you can put their currency at effectively zero. At some point, all the raw material on earth couldn't print enough z-dollars for someone to buy a bottle of cooking oil.

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  3. What do they trade with? Gold nuggets?

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  4. Foreign currency, if it can be had...

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