One important aspect of RNG Abuse, as it relates to capaturing non-legenday Pokemon is missing from the guide -- The effect of Wandering NPCs on RNG advancement.
To rectify this I am writing a few paragraphs (incomplete, at this point) which will end up in that section of the guide. It will be a few meaty paragraphs, so I want this to be subject to review and a few other users have expressed interest in providing some supporting tables. Here is where we will do that.
The story so far:
Wandering NPCs
The preceding methods to advance the RNG were listed because they can be used, in a controlled manner, to reach a target frame. On the other hand, Wandering NPCs* are discussed here because they tend to have the opposite effect: (replace the , with a : IMO) advancing the RNG in an unpredictable manner and foiling our attempts at hitting our target frame. The challenges that Wandering NPCs pose are not always insurmountable, though, and this information should be useful for working around them, (remove) or at least knowing how to avoid them. It is also worthwhile to note (seems rather awkward. Try "It is noteworthy" or simply remove "also") that if you are attempting to capture a legendary Pokémon that (remove) there will be no wandering NPCs to deal with and that (I'd remove these two words and use "which mans" instead. It's tough to decide on this one since it seems a little awkward) this information can be safely ignored. For those attempting to capture non-legendary Pokémon, read on.
Wandering NPCs are those who walk or turn in a random pattern. The best way to tell if the NPC is moving in a random pattern is to simply observe it. If, after a few moments, you can't predict the pattern of its movements it is a wandering NPC. All Wandering NPCs in a zone will advance the RNG, (remove) even if they are not on the same screen as the player character so (remove and replace with a semicolon after character and then place "therefore," after) it is important to know if there are any at all in the particular zone where you are capturing a Pokémon. You can tell when you enter a new zone, (remove) because a location box is briefly displayed showing the name of the zone.
One additional method to determine if there are wandering NPCs in a zone is to capture a Pokémon, without a synchronizer, after waiting approximately one minute following entry to the game world. Once this Pokémon is captured, (remove) enter its stats into the "DPPt Seed Finder" of RNG Reporter, and (remove) then generate a frame listing for method J. For Pokémon that were captured using Sweet Scent (capitalize the move), (remove) the frame will be two. For those that were not, (remove) the frame will be close to the number of steps that were taken before encountering the Pokémon. If there are wandering NPCs the frame will generally be some number higher than 50.
If there are no wandering NPCs in the zone, (remove) you will have no issues with unwanted RNG advancement. If there are, (remove) you will want to figure out which can be stopped. Wandering NPCs may be stopped if they are able to be re-battled using the Vs. Seeker. To stop these wandering NPCs, (remove) you must use the Vs. Seeker successfully, (remove) and re-battle them. When the battle is over these NPCs will no longer wander (and will no longer advance the RNG) until you leave and re-enter the zone. This effect persists between resets of the game, making this a viable technique. Unfortunately, not all wandering NPCs can he stopped, (remove) as they do not all accept rematches using the Vs. Seeker. Experiment to figure out which ones can in a particular zone.