Natural selection/Talk

What does this mean:

the best explanation of speciation

If speciation is the instance of a new species coming into being, then natural selection is not a mechanism of speciation. It is rather the process that determines whether and how long the species population survives. --Ed Poor

So what is missing from the wikipedia entries on Darwin's theory of evolution is (a) identification of the process(es) by which an instance of a new species initially comes into being and also (b) distinction between this(these) cause(s) -- controversial -- and how well they survive -- not so controversial.

I'd also like to see a more clear separation between (a) Darwin's philosphical arguments and (b) the science. -- Ed Poor