The code does not do what I think it should. It is frustrating to tweak it, download it, run it from the block, and find that once again, it does not do what I think it should.
Is there some way to step through a program on the laptop, displaying variables, outputs etc as it runs? Maybe lighting up each block as it is traversed in the program? It is hard to see where my code is bad if I can only test it as a package.