Golf is a notoriously difficult game. Major League Baseball great Hank Aaron famously said, "It took me 17 years to get 3,000 hits in baseball. It took one afternoon on the golf course." Part of its allure is what appears to be its simplicity. Use a club to hit a ball into a hole? How difficult could that be? But there's much more to the sport than that, including the design of the equipment.
Golf clubs might've started out simply but now are highly designed and engineered pieces of sporting equipment. The hosel is a little piece of metal that plays a big part in both golf club construction and in the club's performance (depending on the type of club), as well as its design and how well it's wielded.