Before learining Rails, you heard that it speeds up the development considerably. However, once you become a professional developer, you found things aren't what you think it should be.
That's right. Your development speed has increased, but even with project management, you still have to work overtime. When you finally finish and release the product, the result does not meet your goal or expectation.
So after listening to this talk, you should gain some insights about delivering the project in time and successfully, and the next Hackathon winner will be you.