The real alternative to design (Evolution)

by George Jelliss , Crewe, Tuesday, March 11, 2008, 19:10 (6099 days ago) @ whitecraw

why did evolution bother to advance to multicellular sexually reproductive, complex organisms like us, given the success of bacteria? - I think the answer is, because it could. The way natural selection works means that it tends to move towards greater complexity. This is because more complex systems cannot develop until simpler systems have first evolved. Of course there are cases where evolution involves simplification, as when cave-dwellers lose the power of sight, but complexity has to be preceded by simpler forms. - I would also venture to suggest that more complex systems are likely to be able to adapt in a wider range of ways, though not necessarily more quickly, to a wider range of environmental changes. Also general-purpose systems, like brains or hands, provide for more versatile adaptability than specialised developments like eagle eyes or mammoth tusks or cheetah speed.