Hi,

if you are new to the subject you may want to consult `Evolution' by 
Mark Ridley which provides a solid and excellent introduction to the 
topic. If you would like to know more about the `direction' about 
evolution consult the paper by Lewontin entitled `Adaptation' in which 
the author illustrates evolution by using a niche space metaphor. Also 
of interest would be the work by Van Valen (quoted by Lewontin) whose 
data shows that the likability of extinction is likely across all 
species independent of their duration of existence. In other words, 
species do not get any `better' over time but merely preserve their 
status quo as the environment changes. It is difficult to talk about 
direction (other than effects such as stabilising or disruptive etc.) in 
evolution as it is essentially purposeless. Natural selection does, 
however, favour temporarily advantageous characters allowing the species 
to change (evolve). So, we do become better at coping with the current 
environment but are just as `good' as our ancestors considering their 
environment at the time. Evolution is neither good nor bad, it just happens.

I hope this is helpful.

Cheers,

Philipp


Rob wrote:
> Hi,
> 
> I have a limited understanding of Evolution (A-Level), so please
> excuse me if my understanding is not correct.  I want to know if there
> is any research that discusses the direction of evolution.  Sure as we
> evolve we adapt to best suit the current environment but that isn't to
> say that evolution is a 'good thing' as it is generally assumed?  Just
> because we evolve, it doesn't mean we become a better species, just
> better able to cope with the current environment?  Is statement true?
> 
> Any thoughts appreciated.
> 
> Rob
>
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