Unfortunately one of the things that matters is the endless capacity of humans to care passionately about things that don't matter.
There are numerous examples of this: football and stamp collecting, for instance. Trouser-leg widths. Coffee spoons.
To this list I think I'm justified in adding the thickness of a slash.
That's slash as in one of these:
This punctuation mark is sometimes called a forward slash to distinguish it from a backward slash:
but only a fool would be really really annoyed by this.
Or so I tell myself.
There are those who say that a slash is a slash whatever it's used for, but on the other hand there are those who insist with great passion that a thin slash, used for showing where the ends of the lines in a poem are, is not a slash at all, but a virgule.
There are also those who say that a slash used to show an alternative, as in and/or is also a virgule.
The best advice that I can give/Assuming that you wish to live,/Is, when you see a grammar bore,/To duck/run/hide/or hit the floor.
Word To Use Today (or perhaps not): virgule. This is the French for a comma, which was originally slash-shaped. Before that the word comes from the Latin virgula, which means a little rod.