There used to be this thing called lead time: I mean, there still is but it used to be a big part of my life. If you’re writing in the Christmas double issue of Radio Times, you have to finish it weeks earlier than Christmas. When I was on monthly magazines you at least had an eye on what you’d be doing half a year ahead and with some titles that was crucial. It’s all rather faded away with the rise of online: the greater majority of things I write tend to be needed now and published now.

Only, lead time doesn’t always have to be long in order to be significant.

Yesterday morning I wrote an opinion piece for the Writers’ Guild of Great Britain’s weekly email newsletter. I believe it will be published later today. I’m not actually certain of that now because today is the Writers’ Guild’s AGM and there may well be a delay in this weekly newsletter since a lot of news is happening today.

But in theory, in the regular course of things, I write and deliver it early on a Thursday morning and it gets published on a Friday late afternoon or early evening.

I can’t show you what I wrote because it hasn’t come out yet but I can tell you that it was about Brexit and the business with Nigel Farage and Bob Geldof messing about on boats. Since this is just you and me here, let me tell you that I was pleased with it: I think I found an interesting point to make and it was a point that enabled a fair few good jokes.

But a few hours after I delivered it, the MP Jo Cox was killed and allegedly by a man who shouted words to the effect of “Britain first” either one or two times during the attack. If that’s correct, it would mean this was probably related to the EU debate and so here I am piddling about with jokes when a woman has died.

There isn’t anything in the piece that is directly wrong or arguably is even insensitive. I haven’t had a discussion with the Guild about whether we should postpone or drop it. But its tone is light and jolly and even or maybe especially because it carries a much more serious undertow, I know I wouldn’t have written it a few hours later.

Not a syllable has changed in that piece: for all I know it’s still waiting unread in the Guild’s email inbox until they need it. But a lot else has changed.

I think I talk to you about a time a lot but that’s not even a pixel in comparison to how much I fret about it. One unchanged thing like an article looking completely different depending on where in time you stand. We can’t choose our position in time but that doesn’t alter the fact that the view, the perspective from two different points is so different.

And I’m saying there are two different points but there are three. Or more: I’ve written this to you as if we’re talking now yet maybe you’re reading this because you found this it through some happenstance Google search next year. Certainly I’m having to remember the right tenses and the right terms like saying I wrote that Guild opinion piece yesterday and it’s published today when hopefully that is true from your perspective but it isn’t from mine.

For in order to get to that Writers’ Guild AGM, I will have to leave home very early. Consequently, in order to be sure of talking to you properly and not dashing a postcard off on the train, I’m really writing in advance. Overnight. It’s Thursday night now so I wrote that Guild opinion piece this morning, not yesterday morning. It will be published tomorrow afternoon, not this afternoon. From my perspective right now.

I don’t think any of that surprises or confuses you, though I got a bit free and easy with the tense clauses along the way, but I am not the man I was this morning and I am not the man I will be tomorrow. By tomorrow the initial shock of this MP’s death will be over and whatever I think of the piece I wrote for the Guild, it will be subtly different to what I think now. The real now, the Thursday night now.

Yet again, those words will not have changed one single syllable but now I’ve got three different views, three different contexts for them that mean actually yes, they are different so really they have changed. Writing is about much more than the words on the page or the screen and the text may remain fixed but the meaning, the writing, does not.

Do you see why I am obsessed with time? There are moments when this stuff paralyses me and now I’m picturing you looking at your watch and telling me that we’re out of time, perhaps we can discuss this further next week.