It's obviously not a precise analogy :)
However, it gets the point across; taking a bunch of bits from disparate well-functioning systems and smashing them together doesn't guarantee that you'll get another well-functioning system.
However, it gets the point across; taking a bunch of bits from disparate well-functioning systems and smashing them together doesn't guarantee that you'll get another well-functioning system.
Also +1 to what @Padding says.