I think the biggest challenge I've had to face would be in education. Students having to prepare students for the tests. They would take a test, you know, as a gateway test to advance to the next grade level. That is the biggest challenge I've had to face because as the educator, it falls on you for the most part, so you have to teach them, and you have to make sure they are learning the information, that they're retaining the information, that they can apply what you've taught them, and that was not always the outcome. Everyone learns different, so everyone learns differently, so it would just depend on how they internalize that information.