You can question a human in an exam and ask to "show your work". If you can say solve an equation but can't explain why you did this or that transformation you'

You can question a human in an exam and ask to "show your work". If you can say solve an equation but can't explain why you did this or that transformation you'll be rightly failed. With current NNs you get an answer and that's it, there's no introspection.