These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
It Was His Sled: Soylent Green is people. Like "it was Earth All Along", It's now possibly the world's most poorly guarded secret, and has been parodied almost universally in Sci-Fi comedies and plenty of other places too.
The scoops. Imagine Trash Trucks converted with Bulldozers designed to scoop up the rioting populace. On the outside it seems like an important safety feature. However after the twist ending was revealed, it seemed that Thorn's prediction of the people being used as cattle came true.