Binoculars reflection movie trope

I can’t find any mention of this movie trope:

In movies and TV, often westerns, the hero looks up and sees a clear glint on a mountain or a roof top: somebody is watching them with binoculars.

I don’t buy it. A glass surface (unlike a mirror which has a silver covering) reflects only 4% of the light.
And more, a binocular front lens is curved. This means that the reflection of the sun is very small and weak, and falls off with the square of the distance. It is nothing like a reflection in a hand mirror. (And if it was, it would have to be extremely carefully aimed to be visible to anybody, because the light beam is only as wide as the mirror.)

Dirk Gently

There are two Dirk Gently books, Dirk Gently’s Holistic Detective Agency, and The Long Dark Teatime Of The Soul. They are both humorous, intelligent, complex, and highly imaginative. And very original, I’ve not seen anything quite like them.

Douglas Adams of course wrote The Hitchhiker’s Guide To The Galaxy. The Dirk Gently books are also humor, but not at all as far out as HHGG. They are more ‘realistic’ as far as that can be said of books which involve time travel, ghosts, and gods.

I really appreciate them, it’s extremely rare to see such a combination of intelligence and imagination and humor. I think only Terry Pratchett is in the same league.

Adams was working on a third one when he died at 49 around the millennium. It was published with other diverse scraps, but was clearly only rough ideas.

Are ebooks failing?

There are many stories in the press about how ebooks are apparently failing. It is BS.