I want to explore whether to show whole posts or selected extracts of posts.  This applies to what I shall call a Group page – any page which shows a set of posts rather than a single post (Category pages or Archive pages or the Blog index page). 

To explore this, I have created 2 sets of Group pages:-

1. 1 set shows the entire contents of all the selected posts
2. the second set shows just extracts of the selected posts, with links to the whole post

Now I can compare these 2 sets of pages and decide which I like best.

There is one Blog index page showing whole posts and an alternative one showing excerpts only.

There is 1 selected Category page showing excerpts, while the rest show whole posts.

I think that is enough to allow me to choose a favoured approach.