The Pint He Boiled First

Dear friend,

The riddle first, as the tradition demands. Back in the old town there were two soap boilers, one behind the tannery and one at the top of Rope Lane, and neither let a bar go out of his gate unlooked at.

Two soap boilers in the town I have never named, the same tallow and the same ash lye.
Both could tell strong lye from weak by the feel of it, and both were usually right.
Both looked over every batch of soap before a bar of it was sold.
One boiled a pint of lye with a spoon of tallow before the copper was charged.
One learnt what his lye was worth from the soap it made.
Both checked their work with equal care. Why was only one of them checking anything?

Hold your answer. Story time.

The Story

Two soap boilers, both taken on as lads in the trade, both buying tallow from the same butchers and ash from the same carters. Lye leached through barrels of ash, boiled two days with tallow in a copper, the paste run into a frame and cut with a wire into bars of mottled soap.

There was one thing in the trade neither man could see. The strength of the lye was never twice the same, since it depended on the wood burnt and the weather the ash had stood in. Weak lye will not take hold of the tallow. You can boil it from Monday to Wednesday and have nothing at the end but a copper of hot grease, the tallow spent and no way back. Both judged their lye by the soapy slip of it between finger and thumb, and the man at the top of Rope Lane was the better judge.

The man behind the tannery had a small habit. Before the copper was charged he set a pannikin on the edge of the fire with a pint of lye out of the tub and a spoon of tallow in it, and stood over it twenty minutes to see whether it came to a curd. If it sat there greasy he put more lye through the ash and tried again. Twenty minutes, a pint, a spoonful, and then the copper.

The man at the top of Rope Lane charged the copper first, and he was no sloven. At the other end of the job he inspected more closely than his rival: a bar cut from the middle of the frame, the mottle held to the light, the whole of it felt again a day later. He caught every bad boil he ever made, and he caught them when they were finished.

Three times in the forty coppers each boiled that year, the lye was too weak to work. The man behind the tannery found all three in a pannikin and lost an hour apiece. The man at the top of Rope Lane found all three in the frame, by which time each had cost him three hundredweight of tallow, two days of firing, and a fortnight of apologies to a customer promised soap on the Friday.

Be fair to him. He was the better judge of lye and the closer inspector. His care was all at the far end of the job, where care can do nothing but give the loss its name.

The Lesson, Since You've Earned It

A check is worth only what it can still prevent, so its value is settled by where you put it and not by how carefully you do it. Every trade has a moment after which the work cannot be called back. The cloth is cut. The run is printed. A check in front of that moment buys you the whole of the loss you avoided. A check behind it buys only information, at full price each time.

Most people do not fail to check. They check at the end, where the work is at last visible and a check feels most thorough. It is also the only sort that cannot save the job in hand. The trial in the pannikin tells you far less about your soap than the finished bar does, and that is exactly the point of it. The same arithmetic decides where your caution is worth spending: in front of the step you cannot walk back, and very nearly nowhere else.

The error is stubborn in good tradesmen particularly. The cost of a trial is small, certain and visible: twenty minutes, a pint of lye, a piece of material spoiled on purpose. The cost of going without one is large, occasional, and invisible until it arrives, when it does not look like a misplaced check at all. No man lies awake thinking that his inspection stands in the wrong place; he resolves to take more care, and takes it where he always did. Skill makes this worse rather than better, since the better your eye the rarer the failure and the more a trial feels like an insult to it. The loss, though, is undiminished by your skill, and putting the work right out of your own pocket is the dear course as well as the honourable one.

Two cautions. The first is that a trial which does not resemble the real thing is worse than no trial, since it sells you confidence without selling you knowledge. The pannikin must hold lye from the tub about to be used, not yesterday's. Proof the file that is actually going to the printer, send the letter to your own address, work the figures you have rather than the ones you remember. The second is that this is no argument for proving everything: a man with a trial in front of every step has turned his week into a rehearsal. It earns its keep only where repair costs more than the job pays, which in most trades is two or three steps and not twenty.

Three questions, for the week in front of you:

1. Where in my work is the point after which it cannot be called back? Name the moment and not the job. It is usually exact: the cut, the send, the order placed, the date agreed out loud.
2. Where does my checking actually happen now? Not where you intend it to. Take the last thing that went wrong, and ask at what hour you knew of it and at what hour you could have known.
3. What is the smallest honest version of this job that would tell me what I need to know? One proof sheet, one test piece, one sample order from a new supplier. Price it in minutes and material against what the job costs when it fails, and say both figures out loud.

The Answer to the Riddle

Both checked their work with equal care. Why was only one of them checking anything?

Because the man at the top of Rope Lane inspected his soap after the soap existed, and nothing he found there could be acted upon. His check was a verdict. The other put his twenty minutes in front of the one step that could not be undone, so his check was a decision, taken while it was still cheap. One lost three hours in the year to weak lye and the other three weeks, and the difference was not care or skill, both of which the second man had in the greater measure. It was twenty minutes standing in the right place.

The verse:

The careful eye that comes too late
is reckoning, not care.
So set your little trial up
in front of the repair.

Until next time. Go and name the one step in your work that cannot be undone, and put the smallest possible trial in front of it.

P.S. The hardest step to call back is rarely in the work at all. It is the sentence you say to a customer. A price named, a date promised, a yes given in a doorway: the job is bound before a tool is picked up, with no trial in front of it. The pannikin for a promise is your own order book. Before you name the day, look at what already stands in the shop with a date on it, and name the day after that.

Also in the archive: The Decision He Made Four Times, Four Right and Two Wrong and The Trough Across the Yard.