The ground moved this week Oil prices dropped to a three-month low after the US-Iran deal was announced. The Strait of Hormuz is reopening. Petrol prices are shifting. Central banks are pausing to reassess. If you run a business that touches logistics, energy costs, or international supply chains, you woke up to a different set of numbers than you had on Monday. This happens. Not often, but often enough. And when it does, I see people make one of two mistakes: they freeze, or they move too fast on instinct. Neither works. What works is structured thinking under pressure. That is where a Decision Matrix earns its keep. What a Decision Matrix actually does A Decision Matrix is a scoring tool. You list your options down one side, your criteria across the top, and you score each option against each criterion. Then you weight the criteria by importance and calculate totals. Simple. Almost embarrassingly simple. But that simplicity is the point. When conditions shift suddenly, your brain wants to run seventeen scenarios at once. A Decision Matrix forces you to slow down and compare options on the same terms. I worked with someone last year who had three potential suppliers for a key component. When shipping costs spiked, she needed to switch within two weeks. Her instinct said go with the cheapest. The Matrix showed the cheapest option had a 14-day lead time that would have cost her £8,200 in delayed orders. She went with option two. It cost more per unit but arrived faster. She came out ahead by roughly £5,000. That is what structured thinking buys you: the thing your gut missed. When to pull out the Matrix Not every decision needs one. If you are choosing between two lunch spots, just pick one. But when these three conditions are present, build a Matrix: You have more than two viable options The options differ on multiple dimensions, not just price The stakes are high enough that getting it wrong costs real money or time Market shifts create exactly this situation. Suddenly, your existing supplier relationship, pricing structure, or delivery model is no longer optimal. You have new options. Those options vary on cost, risk, speed, and a dozen other factors. And you need to decide quickly. How to build one in under an hour Here is the process I use. It takes about 45 minutes if you already know your options. First, list your options. Be specific. Not "find a new supplier" but "switch to Supplier A, Supplier B, or renegotiate with current supplier." Three to five options is ideal. More than seven and you are probably not being honest about what is actually viable. Second, identify your criteria. What matters for this decision? Cost is obvious. But also consider lead time, relationship quality, risk of failure, alignment with your long-term direction, and anything else specific to your situation. I usually end up with five to eight criteria. Third, weight the criteria. This is where most people skip, and it is where the value lives. If cost matters twice as much as lead time, give cost a weight of 2 and lead time a weight of 1. Be honest about what actually matters to you, not what sounds good. Fourth, score each option against each criterion. I use a 1-5 scale. Keep it simple. Do not agonise over whether something is a 3 or a 4. Just move. Fifth, multiply and add. Each score times its weight, then sum the row. The option with the highest total is your starting point. The alira.london Decision Matrix tool handles the arithmetic for you. You input the options, criteria, and weights, and it calculates the totals. But you can also do this in a spreadsheet or on paper. The tool is not the point. The thinking is. What to do when the Matrix surprises you Sometimes the highest-scoring option is not the one you expected. This is good. It means the Matrix is doing its job. But do not follow the score blindly. The Matrix is a thinking tool, not an oracle. If the result surprises you, ask yourself: did I weight the criteria correctly? Is there a factor I forgot to include? Am I resisting the answer because it is inconvenient, or because something is genuinely wrong with the analysis? I have seen people redo their weights three times because they did not like the answer. That is not rigour. That is justifying a decision you already made. If you genuinely think the Matrix is missing something, add the missing criterion and re-run it. If the result still surprises you, trust it. Your gut is not always right. The 48-hour version When markets shift suddenly, you often do not have a week to deliberate. You have a day or two. Here is the compressed version: Spend 20 minutes listing options and criteria. Do not research. Use what you know. Spend 10 minutes weighting. Go with your first instinct on each weight. Spend 15 minutes scoring. Again, first instinct. Do not look things up. Run the numbers. Look at the top two options. Now spend your remaining time researching only those two. Verify the assumptions that matter most. Adjust scores if needed. Make the call. This is not perfect. But it is better than either freezing or jumping on the first option that feels right. What to do this week Pick one decision you have been putting off. Something with at least three options and real stakes. Build a Decision Matrix for it. Use the tool at alira.london or a spreadsheet. Spend no more than an hour. See what the numbers tell you. If you run a business affected by energy costs, logistics, or international pricing, review your current supplier and pricing assumptions. The ground shifted this week. Your old analysis may no longer hold. Block 30 minutes on Friday to review what changed in your market this week and whether any decisions need revisiting. Make it a habit. Markets do not send calendar invites before they move.