Thad CrewsDr. Thad Crews, President of PGS Systems, is an Associate Professor at Western Kentucky University, where he is an award-winning teacher and researcher, focused on computer-based technology for teaching, training, learning and assessment. PGS Systemsis committed to developing technologies that are at the cutting edge of the 21st century. He is also one of the key developers of the Visual Logic flowcharting tool. Read More Read Less