Lots of SF contains black holes however - for which OPs statement basically applies as you write yourself. Knowing the limits of current science is important I

Lots of SF contains black holes however - for which OPs statement basically applies as you write yourself. Knowing the limits of current science is important I think - especially for SF authors, since this gives them some ways to have fantastical elements (i.e. powering an Alcubierre drive) while staying scientifically acurate.