When you see something such as "pretty much"...that is not scientific fact or science at all. Could you imagine my company trying to sell a one off proto to a customer for production and they ask if it works I say "pretty much, though I don't have any evidence it does, however, the best conclusion is it does"...I would be laughed out and never called again.
Science is probabilities. That's why you have statistics and all the nice stuff like p-values, confidence intervals and so on. I'd even go as far as saying science is basically never 100% certain about something. It's more of a 'proven beyond reasonable doubt' concept. Once something is tested often enough, it might be considered as 'textbook knowledge' and fact.
And that's also why science can be wrong sometimes, and why it's hard to change dogmas in science (e.g. on which part of your tongue you taste certain flavors).
To get back to engineering: It's basically the same, you are are never 100% certain your part will be strong enough for the application, but you can say it is in 99.999% (or something) scenarios strong enough.
Same with evolution. All the evidence points towards evolution. But still, there COULD be another explanation; but with current knowledge and evidence I'd say the probably that evolution is not true is diminishingly low.
You think the faith of evolution is the best idea of where we came from, I think intelligent design is. You think you have more evidence for your belief, I say there is more evidence for mine. Either way, both still a belief and has no place in actual science and certainly does not deserve the word fact.
As far as my knowledge goes, there is no evidence towards an intelligent design. If I'm wrong (which might be), please present your evidence.
The only argument I ever see against evolution and pro intelligent design is 'but we don't know how x and y works'.
It obviously would be a logical fallcy to use lack of knowledge as proof for something else or as disprove for the theory.
Also, there's a lot of stuff that would be really strange if an intelligent design was the case. How do you explain all the anatomical and genetical anomalies and commonalities?
Any additions so far in tests or real life observation have been destructive to the information. Not one case yet of anything positive.
As I have already pointed out, that's wrong. Scientists regularly genetically engineer new proteins, by adding base pairs to the DNA and then put the DNA back into bacteria. Some of the proteins work as intended.
I think a whole lot of medication is based on the concept of adding information to the dna [Edit: Of course the medication doesn't add new information to the patient's DNA, but the medication is created by adding information to DNA and then expressing the protein in bacteria or other live forms].
Adding information to the DNA literally is a whole industry.