Dr. Popiel received his PhD in physics from Temple University in 1990. After publishing several papers on Quantum Mechanics, he came to a fork in the road: Understand Physics more deeply by moving forward traditionally OR understand it by following the multiple paths that precede it. He chose the latter, and to that end he established a private tutoring business, where he tutored high school, college, and graduate students in math, physics, and engineering. As Einstein said: "You do not really understand something unless you can explain it to your grandmother."