I’m terribly sorry if this fits within the bounds of help-me-fix-my-computer threads but I need to make sure I am not crazy.

On Mac OS 10.4, Intel, whipping up the calculator app, jumping into scientific mode and entering PI + PI = returns 6. Yes, just 6. On the other hand, PI * 1 + PI = gives 6.28318530718.

My question is thus: am I insane or are Apple developers using Bible-based code?