That was just A Study in Scarlet. Which a lot of scholars think Holmes was more-or-less trolling Watson. In the Valley of Fear Holmes remarked that all knowledg

That was just A Study in Scarlet. Which a lot of scholars think Holmes was more-or-less trolling Watson. In the Valley of Fear Holmes remarked that all knowledge was useful to him source: I distinctly recalled using this as an argument against my dad when he told me to focus :P