Seriously, how do you know?
How can you know?
You don't know...
You may believe, but you don't know, right?
Wrong. We both live in the evidence of it being as written. Oh, you can deny it but where does that leave you except frozen in your unbelief of what is evident?
Nonsense, science attempts to best explain the facts and evidence by using natural physics.
Using natural physics the behaviour of matter, energy and planetary bodies of all kinds that cannot be touched can be explained and predicted since natural physical laws can be applied to them just as well as to those that can be physically touched.
The observation of things as they are can not be explained in part. Only as complete in themselves from their beginnings can the attempt then be made to explain how they also contribute to the corporate welfare of the entirety of their existence.. What would happen if the plant pollinators becomes extinct?
You can of course dispute any scientific explanation by using the real facts and evidence but a generally accepted scientific consensus however does exist for a great many things and not least Darwinian evolution.
"Generally accept"? On what basis? Facts? Where are they?
Darwin's theory is just not falsified nor contradicted by anything other than a supposed supernatural apparently based entirely on an adherence to an ancient scripture deemed by some to be inerrant, for no obvious reason that I've ever noticed.
Ah, Yes, "Falsified". Who invented that process but those who needed an out for their unbelief when observing the obvious?
If you have a better theory based in natural physics then by all means do bring it on, but a supposed evidence-free supernatural explanation does not rise above the level of bald assertion, nor above any other proposed evidence-free supernatural explanation that might be dreamed up by someone else.
Why don't you take a lesson in reality. Give answers as to why man can't as yet cure a common cold and other "simple" ailments after, as you believe, having been around for billions of years? Do you know how many sensors are needed in the human body for man to use his legs? Ask the inventors of robots at MIT. Get real Alwight. Be honest with yourself.