Organize Your Evidence Under a Claim

In the last chapter you learned to reason from evidence without stretching past it. But even scoped, honest reasoning falls apart if your evidence is a loose pile in your head. Before you can defend a claim, you have to lay its grounds out where you, and anyone who questions you, can see exactly what is holding it up. This chapter gives you a simple, repeatable way to do that.

See Why a Pile of Evidence Is Not Yet Grounds

By now you can gather relevant evidence on both sides of a decision and reason from it without overreaching. What is still missing is order. A dozen facts floating in your memory feel like support, but you cannot really defend them: you lose track of which piece shows what, which ones truly matter, and which ones quietly cut against you.

Organizing fixes that. When you set each piece of evidence down in the same few terms, three things happen at once. You get to see the whole picture instead of whichever fact you happen to remember most vividly. You can tell the load-bearing evidence from the filler. And you hand anyone who doubts you a clear map of what your claim actually rests on. Grounds you have organized are grounds you can defend; grounds you are carrying around in your head are just a feeling that you have thought about it.

Record Four Things About Each Piece

The whole method is a single habit: for every piece of evidence, write down the same four things. Kept side by side, they turn scattered facts into an orderly set of grounds.

The source is where the piece came from: the receipt, the log, the person, the published figure. Recording it is what keeps the evidence checkable, the quality you met back in Part 1.

The kind is which of the four kinds of evidence it is: data and measurement, direct observation, documented experience, or credible testimony. Naming the kind reminds you of its typical strengths and blind spots before you lean on it.

What it shows is the specific finding in one plain line. Not the whole story, just the single point this piece actually establishes.

How it bears is the part people skip: does this piece support the recommendation, count against it, or only partly, and how strongly? This is where you stay honest, because an organized set includes the evidence that works against you, not only the flattering pieces.

Build the Organizing Table: One Worked Case

Watch the habit at work on a single decision. Suppose your laptop is getting old and you are weighing whether to replace it now or wait another year. Your recommendation is: I should replace the laptop now rather than wait. You have gathered five pieces of evidence. Here they are, each set down in the same four terms.

Read the set as a whole and the decision comes into focus. Three pieces, the repair history, the boot time, and the battery reading, all point the same way, and they are exactly the kind of evidence that holds up: firsthand, measurable, and checkable. One piece, the price, honestly counts the other way, and it is worth keeping in view rather than hiding. One piece, the review, supports the claim but only lightly, because it speaks about the model in general rather than about your own situation.

Let the Strongest Grounds Carry the Claim

Once the set is laid out, you have one judgment left: which pieces actually carry the claim? Not every row pulls equal weight, and your job is to notice which ones do the real work. Run the leading candidates through the four questions from Part 1, is each one relevant, reliable, broad enough, and checkable, and let the pieces that pass carry the recommendation. In the laptop case, the repair history and the battery reading carry it: both are directly relevant, firsthand, and easy to verify. The review rides along as light support, and the price is the honest cost you weigh against them.

Counting is tempting because it feels objective, but it quietly throws away everything you learned about strength. Five soft, barely relevant pieces on one side do not beat one solid, directly relevant piece on the other, and a table that lets them is worse than no table at all, because it dresses a weak decision up as a careful one. Use the layout to see your evidence clearly, then weigh it; do not let the number of rows do your thinking for you.

Let’s Recap!

• A pile of evidence in your head is not yet defensible grounds; organizing it is what turns gathered facts into a claim you can stand behind;

• For every piece, record the same four things: its source, its kind, what it shows, and how it bears on the recommendation;

• Recording how each piece bears, including the pieces that count against you, is your guard against one-sided stacking;

• Identify which few pieces actually carry the claim by running them through the four questions of relevance, reliability, coverage, and verifiability;

• Organizing is an aid to judgment, not a scoring formula: weigh the strength of your grounds, never just tally how many point each way.

You can now lay your evidence out as organized grounds under a claim. In the final chapter of this course, you will bring every skill together and build one evidence-based claim from start to finish, on a single real case.