I came across a youtube video essay about what is speculative fiction and it's relationship with science fiction, and I thought it would be nice to share it with you here. Check the link below.
Book Odissey channel: Science fiction vs speculative fiction.
It also goes into giving concrete...
We had a lot of fun with this. My wife is an opera singer and voice coach, and she wrote and performed this using a libretto that I wrote in the Elvish conlang from the series.