What is le mechanism which causes le phenomenon of gravitation?

No.11109959 ViewReplyOriginalReport
>inb4 spacetime curvature + nobody knows
>inb4 spacetime curvature + extra dimensions
>inb4 spacetime curvature + abstract math object
>inb4 appeal to authority
>inb4 appeal to consequence
>inb4 extra universe(s)
>inb4 it's impossible to know

And as always, feel obligated to enumerate every single detail of your reasoning and conclusion.