[BMCDA]

It hides bad tosses.

...and multiplies good tosses.
Good tosses are rare but if they occur they spread pretty fast.

[js1138]

I sure would like some feedback on this analogy. I'm pretty tired of the million monkey argument.

[gore3000]

Good tosses are rare but if they occur they spread pretty fast.

No they do not, genetics teaches us it is very hard to spread a new gene. In fact, it is because of the difficulty in spreading new genes that Gould broke from the Darwinians and started punk-eek and why Kirmura broke from them also and developed the theory of genetic drift.