I think you can be forgiven for that, Raiko. It has a definite continuity to it - being the floors of the original map.

Beautiful mapping!

It's an amazing work of art ?

They are different tools that appear to do the same thing, but using different methods. All I know is that the prescale offset brushes tend not to do as much accidental damage to the world as the other brushes do if you raise and lower the same piece of land repeatedly as a result of changing your mind about things being land or sea.

For a more technical explanation you would need someone like @jslayton - if he is available :)

Sounds exciting :)

Have a lovely time!

I think it was a brilliant idea, and I can see how it would halve the time taken to do a Ferraris Style map, maybe even more than that. In fact, if I could only lay my hands on that 25 hour day I had somewhere lying around this place I'd have a go myself :)