§03 · Two rooms

Now the move, which is not in any one finding but in the architecture. The First Nation did not only argue about this parcel. It argued that decades of prior development had already eroded its members' ability to exercise treaty rights, and that against that background this approval mattered because it pushed further toward the point where the rights stop being meaningful. That is the cumulative-effects argument, and the law recognises it. The question is where the law lets it be heard.

Where the cumulative harm fits infringement / the merits	The room you must pass first standing: "directly and adversely affected"
The question that fits the real harm: have decades of development pushed members past the point where treaty rights stay meaningful? The "tipping point" of Mikisew and Yahey.	The only question asked at the door: does this one approval, on this 1.08-hectare parcel, harm a specific, located, present-tense use?
Cumulative effects are cognisable here, once you are in.	Cumulative effects "do not, on their own, give rise to standing" (para 78).
You cannot enter the left room without first clearing the right one. The sum is heard only after you prove a sliver. So the sum is never heard, because each sliver is small, and the ground is already cleared.

Read it as two rooms. The harm a First Nation carries is cumulative, the sum of a thousand approvals, and the law keeps a room for that sum: the infringement stage, where the tipping-point doctrine lives. But you reach that room only through standing, and standing asks whether this single approval, on this small parcel, harms a specific located use right now. The court was explicit that cumulative effects cannot open that door on their own. So the only frame that holds the whole harm is reserved for a room the threshold keeps you out of, and the harm is processed one deniable increment at a time. This is the doctrine applied correctly, not an error, and that is what makes it a wash rather than a mistake. One decision, 2026 ABCA 197, not a count of every case.