I quite like the websequencediagram. looks like a cool product!

He's mainly talking about the tech implementation which is the easy part.

the hard part of creating a business is finding a problem valuable enough to solve and reaching the users who need that problem solved. that's where the real value is.

This is the most frustrating problem I have. I do my 40 hours per week, play with my kids, relax with the wife, and play some video games. I don't really have any other problems besides not enough time in the day. And yet when I learn about some domain specific problem, it is blindingly obvious.