Strange

to strange a reply to your quotation of me

the substance of a black hole's properties in the "observable universe"

it has to be something as it sucks all light and is therefore invisible and this is the "observable universe" and only incompasses things visible so no invisible thing exists in the "observable universe" (<-technically) so it is nothingness(in the observable universe) and something  in the actual universe (where things our eyes cant see exist)

factoid

there might be an infinitely abundant object we don't know about due to the infinity of this universe it both must exist and might'nt

A literal ten year old.