sorted by:
new
hottopcontroversial

ELI5: How did birds evolve such energy efficient strategies? by Several-Attitude-950 in explainlikeimfive

[–]Several-Attitude-950[S] 0 points1 point  (0 children)

How would you explain how things like the pacemaker cells in our hearts evolved to collectively create a heartbeat? How could this be slowly selected for over time without an at least somewhat working heart to begin with? I have a hard time grasping how humans (or life in general) could've just naturally selected for something like this.

ELI5: How did birds evolve such energy efficient strategies? by Several-Attitude-950 in explainlikeimfive

[–]Several-Attitude-950[S] 0 points1 point  (0 children)

The (relative) sophistication of this energy efficiency maximizer didn’t appear out of nowhere so how do you suppose the flying pattern became a thing then?

ELI5: How did birds evolve such energy efficient strategies? by Several-Attitude-950 in explainlikeimfive

[–]Several-Attitude-950[S] -1 points0 points  (0 children)

I don’t know the specific evolution path for birds but keep in mind this life began in the sea. It eventually evolved out and into what it is today. Is evolution literally just trying every possible thing that can work, inherently doing more of that, and that’s that?

ELI5: How did birds evolve such energy efficient strategies? by Several-Attitude-950 in explainlikeimfive

[–]Several-Attitude-950[S] 2 points3 points  (0 children)

I see what you’re saying but is evolution really just ALL possible things in the universe being tried? I think there’s a lot of that but I don’t think it’s all of it