lets put it this way
lets say there's a family of 'x' on 1 side, and a family of 'y' on
1 side
you know the structure and everything of x, just not the exact
weight each x. same thing for y. after deduction, you think that x
is roughly equals to y
when put on a balancing beam, x and y are actually different in
weight. each of them. on surface, they may seem to be equal, but
there are things that cant be assumed to be equal..for they arent
even the same thing..
