"Gratitude", Oliver Sacks. Lovely short book.
I think its safe to say it favors species that desire to continue into the future. Which is really why I think any intelligent species will at least want to spread out to multiple star systems.
I don't think we need more than one sample to say, natural selection favors survival.
Honestly, in my experience, the ease at which things are to fix is totally counterintuitive. I've been on both sides of a conversation where something was much easier to fix, and much harder. Sometimes even an expert really can't tell easily without a detailed investigation.
I'm an aircraft mechanic. I'll get a job with the problem on a job slip. When I get out to the gate it can be a totally different issue. It might be real simple or a total disaster. Before I get out to the plane I am thinking how to fix the problem. I really don't know until I get there.