[derleth]

I don't think we're agreeing on the basic definitions, and until we do it's pointless to continue.

[VMG]

Under what definition of "decimal" is Pi a decimal number?

[derleth]

When you use it as a very informal synonym for 'real', or as a short form for 'infinite decimal'. (This is even more understandable when you realize every decimal is an infinite decimal, and our convention of truncating an infinite string of zeroes has little mathematical reality.)