They are close enough that the relationship between them is graspable to the human mind, if the numbers themselves are not. Take the unimaginable 10^77, put it

They are close enough that the relationship between them is graspable to the human mind, if the numbers themselves are not. Take the unimaginable 10^77, put it in a box. Now imagine a thousand boxes. That's 10^80. Of course a thousand times an unimaginable number is astronomically bigger on a linear scale, but if you just look at the relationship between the two numbers it's imaginable.