[R] Value of 'pi'

[Barry Rowlingson]

>  "For an engineer, assuming that pi = 3.142 will
>  probably enable him to build a very satisfactory
>  bridge. Assuming that pi = 3.14159265358979323844
>  will give the circumference of the Earth's orbit
>  to one millionth of a millimetre. "

 And just a few more decimal places will get you the circumference of
the universe accurate to the size of a proton:

http://www.trans4mind.com/personal_development/JavaScript/longnumAstronomical.htm

 Neglecting Einstein, of course.

Barry