“One particular club I tried a few weeks ago and really liked was Callaway’s Epic Flash, which goes on sale to the public this morning. It’s made with artificial intelligence and machine learning — no fooling. Its Flash Face aims to help golfers get more ball speed for more distance. Callaway engineers bought a $5 million computer to help them design the inside of the clubface, feeding the machine information on what exactly they wanted with respect to ball flight. After cycling through 15,000 iterations of the clubface, the software came up with unique mapping on the inside of the clubface that consists of dozens of seemingly random and subtle ripples flowing from heel to toe.”