Who you gonna believe: Grok or the docs?

This article examines the argument order for the Bessel function j(x) in the bc calculator utility. The author tests whether the first argument is the order n or the value x, comparing Grok's claim (j(n,x)) against the man page (j(x,n)). Through practical testing with bc, the author confirms that Grok is correct: the first argument is the order n, and the man page on macOS contains a documentation bug. The article highlights the importance of testing over trusting documentation, and notes that the Linux man page is correct. This is relevant to IT/technology as it involves software testing, command-line tools, and documentation accuracy.