In ring only patterns the space between the rings is often not designated. For example, the snowflake above is from 24 snowflakes in tatting but it does not say how much space to put between the rings. This means there is a strong possibility that when I get the first round complete it will cup and I will have to start again.
I think of an easy pattern as one that will look nice with minimal skills. Although the only skill involved here is ring making, I also need to guess at the spaces needed between the rings to have the snowflake come out flat. This makes it a fussy pattern to do. I will probably work at mastering it simply because once I figure out the spaces between the rings it will tat up very quickly.