English-Polish translation for "simplification"

simplification {noun}

And this slide here is the best simplification of the Great Divergence story I can offer you.

It's this terrible simplification that there's one Africa and things go on in one way in Africa.

And so -- this is an over-simplification -- but basically, it's not like you can just pass a radar signal right through 156 tons of steel in the sky.

Now there's a theory called super-symmetry, which doubles the number of particles in the standard model, which, at first sight, doesn't sound like a simplification.