Nothing Grows in a Straight Line

The straight line is the lie we tell ourselves.

My first boss showed me that thirty years ago, with a pen and a piece of paper, and I have been leaning on it ever since.

Early on, he drew me a picture. Two lines. A straight one, and a squiggly one moving around it. He was explaining how companies actually grow. The straight line is what people expect. The clean climb. The squiggle is the truth. The earnings, the cash flow, the stock price, none of it moves in a straight line. There is always a wiggle.

He meant it about companies. It took me years to understand he had handed me something much larger than that.

Nothing grows in a straight line. Not companies. Not careers. Not people. There is always a wiggle.

Here is the investing idea underneath this.

Pull up the long-term chart of one of the great compounders and stand far enough back, and you see a line that climbs. Smooth. Inevitable. Now zoom in on any single year of that same chart and it is chaos. Drawdowns. Stalls. Months where the thing went sideways and looked broken. Quarters that felt, to the people living through them, like the end.

It is the same line. The only thing that changed is the distance you are standing from it.

The straight line and the squiggle are the same picture at two different distances.

Most people hear that and think the lesson is to stand far back. It is not. You need both distances.

You have to be able to zoom in. The real work happens up close, in the detail. The actual cash flows. The actual quarter. The specific decision in front of you. Nobody ever built anything of value by staying comfortably far away from it. Close is where the work gets done.

But close is also where the panic lives. Up close, every wiggle is a crisis. The bad quarter feels like a verdict. So you also have to be able to pull back out, far enough that the same wiggle resolves into a line that is still climbing.

The skill is not distance. It is range. Getting close enough to do the work and far enough not to be destroyed by it, and knowing which one the moment is asking for.

Some of that range you build yourself, through your own reps. I have written before about how far that gets you, and where it quietly fails. The short version is that your own experience is only ever calibrated to what you have personally seen, and the world keeps producing things you have not.

Which is why the more important half of range is the half you cannot build alone. You borrow it.

You widen your own lens by widening the set of lenses you can reach. The people you keep close. The ones who have stood where you have not. What you read. What you listen to. The colleague who looks at the same chart and reads it differently. Perspective is not just earned. It is assembled, deliberately, from outside yourself. The people who stay steady over decades are not the ones with the longest personal track record. They are the ones who never stop borrowing vantage points that are not their own.

Here is why the borrowed kind matters most.

When you are deep in a bad stretch, you lose your own range. The moment jams you up close and will not let you move. The wiggle fills your whole field of vision and you cannot pull back, because from in there you have forgotten the long line exists. Everything you have ever learned is still in your head somewhere. The crisis has simply taken your access to it.

That is what the right people give back. Not encouragement. Range. They stand far enough back to see your long line at the exact moment you are stuck too close to see anything at all. They do not tell you the wiggle is not happening. They tell you it is a wiggle. They hold the distance you have lost until you can reach it yourself again.

The man who drew me that picture was named Stephen McGruder. He could do both distances better than anyone I have known. He got deep into the detail, built his models by hand, knew the actual numbers cold. And he never panicked at the wiggle, because he had spent a lifetime borrowing range. He was the most curious person I ever met, always reading what others were not, looking where the room was not looking, collecting vantage points the way other people collect grievances. He had assembled more lenses than anyone, and so he could always find the distance.

He was that distance for me, again and again, across thirty years. I inherited a steady temperament, and I was lucky enough to meet someone wise before I was wise enough to know it. He handed me things I could not yet understand and trusted I would grow into them. This was one of them.

I have spent my own career trying to be that for other people. I cannot think of a young investor I have mentored to whom I have not drawn that same picture, a straight line and a squiggle, on a scrap of paper or traced in the air with my finger. I give it to them the way he gave it to me. And when they are too close to their own chart to see anything but the crisis, I try to be the distance they have lost, until they can hold it themselves.

Stephen died recently. Last week I shared some words at his memorial, and this is the thing about him I could not stop thinking about. For thirty years he stood far enough back to keep the squiggle in proportion, for himself and for everyone lucky enough to be in his orbit.

The wiggle is not the problem. The wiggle is the path. And you were never meant to find the distance alone.

This week's question:

When you are jammed too close to your own chart to see the long line, who is far enough back to find it for you? Not who encourages you. Who actually lends you the distance when your own runs out. If you cannot name them, that may be the most important thing this letter has to tell you.