Evolution of anything through metamorphosis needs unpredictability

 Unpredictable is ok. Evolution of anything through metamorphosis needs unpredictability. But let us try our best. Cheers. George Bernard Shaw, "The reasonable man adapts himself to the world: the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man" and 'The golden rule is that there are no golden rules.”