Chasing a ranking factor costs more than it returns when the marginal gain it offers is smaller than the effort and the opportunity cost of pursuing it. That line gets crossed in three recognizable situations. The first is when the factor is minor or acts only as a tiebreaker. Pouring hours into a signal that nudges a position slightly, and only when everything else is equal, buys a tiny gain at full price. The second is when you have already hit diminishing returns on a factor. The first round of work captured most of the value, and each additional pass yields less while costing the same or more.
The third situation is when the same effort would produce more somewhere else. Even a real factor is the wrong place to spend time if a different page, term, or improvement would return more for the same hours. This is the opportunity-cost half of the line, and it is the one people forget. The question is never just “would this help,” it is “would this help more than what I would do instead,” because every hour spent here is an hour not spent there.
This cuts against the instinct to optimize every ranking factor because each one might matter. They do not all matter equally, and treating them as if they do spreads effort thin across signals with little leverage. The factors worth chasing are the ones with real leverage on the outcome, the ones that move position meaningfully for the work involved. The marginal signals, the tiebreakers, and the already-exhausted factors are where effort leaks out for almost nothing in return. Restraint here is not neglect, it is allocating finite time to the work that actually pays.
To locate the line, weigh the marginal gain of the factor against the effort and what that effort would earn elsewhere. If the factor is minor, if you have already captured most of its value, or if the hours would return more on another page or signal, drop the chase. Put your effort into the high-leverage factors that move the result, and let the marginal ones go. Chase leverage, not every signal.