They’re making the (possibly false) assumption that density will stay the same, so size must grow with weight.
Of course, it’s equally likely that size will remain constant. It changes or it doesn’t -> 50/50 odds. Until the point it all collapses into a black hole.
How is size (“big”) even associated with mass (“weight”) in this relation?
What is a “pounds”?
They’re making the (possibly false) assumption that density will stay the same, so size must grow with weight.
Of course, it’s equally likely that size will remain constant. It changes or it doesn’t -> 50/50 odds. Until the point it all collapses into a black hole.