the same, theyâre not identical. In fact, it would be pointless to write down that one hundred equals one hundred. The whole point of the notion of âequalsâ is that two things are unalike yet equal.â
âIâm no better at numbers than you are, Jack,â I protested. âSo forget mathematics. In fact, I suspect that once you move outside of mathematics you wonât find a single example of âequal but differentââsince that is an expression that makes no sense.â
âIt makes every sense in the world, young Morris. Picture a set of scales, an old-fashioned set of balances, with a pound of lead on one tray balanced by a pound of wheat on the other. You can see that picture, canât you? On one side a bag containing a pound of wheat seeds and on the other a bar of lead. Both weigh one pound. The scales are perfectly balanced because theyâre equal. But theyâre certainly not alike: one is mineral, the other is organic, one can be planted and grow, the other canât, one can be turned into food, the other canât . . . â
âNo need to go onâI see the point. But thatâs an aberration. In most cases âequalâ means âidenticalâ. In human affairs, for instanceââ
At which point Warnie interrupted to say, âI can think of another example, old chap.â
Jack went back to finishing his pork pie and I turned to Warnie. âGo on.â
âTwo chaps I know in my regimentâTed and Alf. Thoroughly nice chaps, both of them. As it happens they joined the army on the same day . . . Iâve heard them say it in the mess more than once. Both have the same rankâtheyâre both majors, like me. And they both have the same length of service, and the same pay and benefits. Absolutely equal in every respect. But theyâre not interchangeable. Ted is an army surgeon and Alf is an army engineer. Isnât that Jackâs point, old chap? Equal but different?â
Jack had finished his pork pie and was sweeping up some crumbs with his napkin. He chuckled and said, âWarnie made my point better than I could. There would never be any reason to put an equals sign between two things, or people, that were identical. We only use the word âequalâ to indicate that these two things or people that are different are of equal weight in the scheme of things.â
He paused to take a deep draught from his pint. âSo,â I said, gathering my thoughts, âyouâre claiming that even if we say every way of looking at the world is to be given equal respect and consideration, weâre not bound to think theyâre all the same or have the same explanatory value, hence âequalâ doesnât mean theyâre all true.â
Jack set his glass back down on the table and said, âPrecisely. And the next step is that it canât be just a matter of what suits you. Thatâs relativism, and relativism kills rationalityââ
Before Jack could finish what he was about to say we were interrupted.
âI have it!â cried Warnie, his voice vibrating with discovery.
Jack and I both turned to look at him. âHave what?â I asked.
âI know who murdered Franklin Grimm!â
We looked at him expectantly.
âIt was Boris,â he said. âYou know, the ghost of the butchered footman. Today is the anniversary of his slaughter, so he was due to reappear. And he didâand murdered the bank teller.â Having delivered this pronouncement, Warnie sat back with a satisfied grin on his face.
SEVEN
A stunned silence followed Warnieâs pronouncement. Jack and I both stared at him while Warnie finished off the last of his pint oblivious to our amazement.
âIn other words,â Jack said to his brother, âWeâre not caught up in an Agatha Christie murder story but in an M. R. James ghost story? Or a macabre tale by Edgar Allan