[Python-ideas] Why not picoseconds?

[MRAB]

On 2017-10-16 13:30, Greg Ewing wrote:
> Stephan Houben wrote:
> 
>> Interestingly, that 2.2e-16 pretty much aligns with the accuracy of the
>> cesium atomic clocks which are currently used to *define* the second.
>> So we move to this new API, we should provide our own definition
>> of the second, since those rough SI seconds are just too imprecise for that.
> 
> The Python second: 1.1544865564196655e-06 of the time
> taken for an unladen swallow to fly from Cape Town
> to London.
> 
Is that an African or a European swallow?