Design is more likely to lead to harmony and order.

Peace, Order and Harmony will be the usual, studied goal of any good design. In randomness there is no goal (since there is no design).

For God is not the author of confusion, but of peace, as in all ekklesias (citizenry) of the saints. 1 Corinthians 14:33

... thou thyself also walkest orderly, and keepest the law. Acts 21:24

Let all things be done decently and in order. 1 Corinthians 14:40