>>A spider which has evolved to drink blood. But, it can't get blood from animals that manufacture blood. So, it evolved to drink blood from animals that already drank blood. Because that's easier.
Evolution is surprising.
If the spider evolved to drink blood but at the same time couldn't get it due to it's inefficient fangs, then it would have died due to a lack of blood -- and the potential lineage would have gone with it.
Think about it, if it couldn't get blood from any other animal, how was it to survive? How did it know about fat juicy mosquitos?
Those who believe in the DOGMA of evolution treat the process as an intelligent entity, able to make conscious decisions. It's sad because there is much to be said about the theory of evolution, but it get's clouded by the adherents of the "religion" of evolution...
That's why evolution doesn't work in the ridiculously simple-minded way you describe.
Think about it, if it couldn't get blood from any other animal, how was it to survive? How did it know about fat juicy mosquitos?
...because it evolved from a spider that lived on a more generalized insect diet (like most spiders), but eventually evolved to specialize on just the blood-laden mosquitoes it was catching along with all the other stuff, because they were a more nutritious food source.
Duh.
Those who believe in the DOGMA of evolution treat the process as an intelligent entity, able to make conscious decisions.
No, we don't, because we know how the process actuall works. But idiotic creationist pamphlets like to portray it that way, based on their own misunderstandings about how such a process could "only" work that way (via "foresight", etc.)...
It's sad because there is much to be said about the theory of evolution, but it get's clouded by the adherents of the "religion" of evolution...
There is no such "religion of evolution", but there's a lot of false propaganda said about evolutionary biology by followers of actual religions.