the 1940s saw Gibson introduce the laminate archtop. while partly a cost cutting measure, it was an attempt to reduce feedback at the ever increasing volumes guitarists were playing at. laminate construction drastically changed the sound of the guitar. no longer would it really have much of an unplugged, acoustic voice. the guitar became a truly electric instrument. given the controversial (and heated) talk on guitar forums regarding alternative materials and processes, regardless of how the company got to them, it seems like the same moment in time.