the whereu dilemma, page-259

"If evolution was hit and miss it would not show an almost linear progression of refinement and a progression of complexity."

Waffle, I think this is a confusing point.
On a long time scale, evolution may appear linear , but on a short timeframe, there would be more hit and miss visible.

Evolution is confusing because it is happening right now, but until we look back a long way, we do not see the trends.

I feel creationists have difficulty here, for example the evolution of the eye.
It may seem impossible to have evolved without a creator, but over a long time scale it can be explained by science via fossils.