in this case my tax situation is so retarded simple, I could verify what it suggested step by step and I performed the actions on one of those free tax usa website. the irs accepted my returns and everything went fine. if you're in a simple tax situation, try it!
Coding is an interesting area -- it can code, then compile to see if that part worked, then test to see if more worked.
With taxes, it sets things up and the review phase is the IRS fining you.