It is guided, but not by any conscious will. It is guided by
selection pressure, which is ultimately a nice name for the circunstances around them.
What is Selection Pressure?
This attribution of "forces" that "guide" (such a description sounds conscious and intelligent like that of a being) to non-organic matter one day will make science disprove itself and I don't mean science concluding the existence of "God", I mean science discovering and revealing its own absurdities.
Science then would be replaced with another "type" of science. A higher one. "Science" as we know it might cease to be. And the "science" of the future would be much more complicated to that which we have now, and that "science" would show the absurdities of the science of today like how we scoff at the alchemy of the ancients.
Humans observe
then they try to make sense of the observation
for this they try to find reasons for the observation, either they take a magnifying glass or the reason stares back at them(they think)
and of all reasons, they want the "most reasonable" one of all
finally they make conclusions when they feel satisfied (now this could be something they knew all along that would where they eventually would be lead to, or the conclusion would just be pressing against them about its own obviousness and they decided "well alright I get it already")
all the "science" that we study is something about a part of the universe. and we are also a part of the universe, not the whole universe itself. its one part of the universe against another part of the universe.
who takes the whole as the whole? who includes the individual observer who looks out of himself at the external?
"science" of the Western "modern" world has lost the spirit of science which is about discovering man's own ignorance and while at it marvel at the wonders of nature. Also helping him to overcome his own inability to control what happens to and around himself.
Nobody seems to realize that now science is more interested in getting results rather than studying things for what they are and what matters is the study itself.
people who think they do service to science have got the cheek to ask "where is God?, theres no evidence for it! whoever talks about this God thing is just plain stupid!"
Science proves fanciful concocted superstitions which are contorted from reality, as wrong. Science is the tool the Monotheist uses to crush nonsensical mythologies that include non-existent Deities.