[majkinetor]

> As long as the abstraction layer works well for you without getting too much into the details of the implementation, it's a simple solution.

You can have very large number of layers, and to understand inner goings and interconnetions of all becomes very hard.

I highly doubt you can equalize "set of superb interfaces" with simplicity.

[xiphias2]

You're totally right. Just watch the video, I can't compete with Rick Hickey. I just rewatched it and would probably modify what I wrote, but the main point is: it's better to not write a summarizing article or comment when that video is so great, so I won't try to write something smarter (rather try to apply the things he said in the video).