I tried this to see if I could recommend it to coworkers. When you are in tutorial mode, it explicitly expects you to type into the interpreter what the tutori

I tried this to see if I could recommend it to coworkers. When you are in tutorial mode, it explicitly expects you to type into the interpreter what the tutorial tells you to type in. If you don't, you get a compiler error message. This means you cannot experiment with variations of ideas presented in the tutorial. The tutorial itself is arranged like a 20 minute sitcom where a drama is resolved in a single sitting at the computer. Alternative tutorials should require at least some thinking; I will resist calling such tutorials 'better' and placing a value judgment on Chris's work, since I am sure some will find it useful. I do like how the tutorial initially hides the output of the type of the expression, to avoid having to explain erroneous details, though.