Dear Customer, you can have any of the following, but pick any 2.
- Good
- Cheap
- Fast
If you want Good and Cheap - it won't be Fast.
If you want Cheap and Fast - it won't be Good.
And, if you really want Good and Fast - no way will it be Cheap.
I like this comment that was left on a blog for the book "Do More Faster" (Source: AVC.com)