[shuvuvt5]

Nobody gets it right the first time.

Good design evolves from knowing the problem space.

Until you've explored it you don't know it.

I've seen some really good systems that have been built in one shot. They were all ground up rewrites of other very well known but fatally flawed systems.

And even then, within them, much of the architecture had to be reworked or also had some other trade off that had to be made.