These annoy me, a lot. They are usually done either badly or they feel like the author is condescending: 'my readers are idiots so I'm going to take them by the hand and s-p-e-l-l it out for them.
Ex: Tanamera, a family epic written in the 1980's. 1st POV is the 2nd son/MC who grows up and inherits the rubber & tin plantation in Singapore--his is the most powerful family there.
Midway through the book, MC is in love with the daughter of the 2nd most powerful family, friendly rivals except for the foster son in 2nd family: Bad Guy who hates the MC. This animosity has been reiterated in various ways since the beginning.
Midway the author drops in via the MC POV, rough recall: If I had known what was to come I would have killed the bastard.
This is such a waste of time, of snide authorly: I know something and you --the reader-- don't though I've made it clear from the getgo that the MC and the BG hate each other, and the BG is out to get the MC. Oh yes, and I've half the book to show you blahblahblah.
grr, did I mention I hate this preview dreck?
Ex: Tanamera, a family epic written in the 1980's. 1st POV is the 2nd son/MC who grows up and inherits the rubber & tin plantation in Singapore--his is the most powerful family there.
Midway through the book, MC is in love with the daughter of the 2nd most powerful family, friendly rivals except for the foster son in 2nd family: Bad Guy who hates the MC. This animosity has been reiterated in various ways since the beginning.
Midway the author drops in via the MC POV, rough recall: If I had known what was to come I would have killed the bastard.
This is such a waste of time, of snide authorly: I know something and you --the reader-- don't though I've made it clear from the getgo that the MC and the BG hate each other, and the BG is out to get the MC. Oh yes, and I've half the book to show you blahblahblah.
grr, did I mention I hate this preview dreck?