The 2×2 matrix is the most used and most misused tool in strategy. It works when both axes are genuine trade-offs — you cannot have more of both — and collapses when one of them is a preference dressed up as a law.
Low effort, low certainty. Do them constantly and do not write them up. Most of the value in a company comes from a hundred of these and nobody remembers any of them.
High effort, low certainty. The hardest quadrant, because the cost lands now and the payoff may never land at all. Cap the number you allow yourself.
Low effort, high certainty. These are the projects everybody agrees about and nobody does. If it is truly certain, it is truly cheap, and you are lying about one of the two.
High effort, high certainty. Do fewer, do them properly, and be able to name the date you finished. Almost nothing on this chart lives here, and that is the point.
Move an item between quadrants by clicking one. The chart is only useful if the axes really are a trade-off — so this one insists: high effort must cost high certainty, and low effort must buy it.
Put anything on the horizontal axis and anything on the vertical axis and you have a 2×2. The question is whether moving right is genuinely a trade against moving up. If it is not — if you can have both — then the chart is a priority list wearing a disguise, and it will mislead you precisely when you most need it to be right.
So: name both axes, state what you give up by moving along them, and if you cannot state it, throw the chart away and write a list. The list will be boring and it will be correct.