Boson_heavy

I would like to point out, in regards to pi in base pi being ten, that in fact how would you define pi as a base? For one, calculated in different bases, the number differs. So which "Pi" would you take as the base? If the number infinitely does not repeat, how could you ever hope to use Pi as a base for establishing Pi as ten? Perhaps my logic is flawed, would be very pleased to have my error corrected.