…people believe there might be a connection between the arrow of time and a quantity called entropy. While most people normally equate “disorder” with entropy, that’s a pretty lazy description that also isn’t particularly accurate. Instead, think about entropy as a measure of how much thermal (heat) energy could possibly be turne…
You might have already guessed why the last
observeOn() made its effect and not the other ones. As we already know, subscriptions always happen upstream, on the other hand, emissions always happen downstream. They originate from the source observable, flowing down the chain to the sink subscriber.
As we’v seen,
subscribeOn() instructs the source observable to emit its items on a particular thread, and this is the thread responsible for pushing the items all the way down to the sink
Subscriber. Thus, by default, the subscriber will also consume items on that particular thread only.