Every day, my iPod and I go for a run. I do 4 miles, at a steady pace of 7.11 minutes per mile. I know this because my iPod+Nike kit tells me. The trouble is, sometimes it seems that everyone around me is conspiring to interrupt my run. People continually step out in front of me, causing me to slow down or swerve in order to avoid them. It’s essentially a battle of wills for who will go first and second.
Initially, I assumed that this was simply random happenstance - what one should expect from living in such a populous city. But I’ve started to notice a pattern. All too often, the road ahead is entirely empty, with someone loitering on the sidewalk, only to step out as I pass. It’s as if they’re deliberately trying to get in my way.
This realization took me back to the days when I used to do lane swimming. It was so frustrating when I was about to complete a length, and there was someone lingering at the end of the pool, who would wait until the last possible moment to push off, so I’d end of swimming right behind them on the next length, with their posterior practically on my face. Basic courtesy dictates that they should start a little sooner, or a little later, to ensure an even distance between swimmers.
But why would anyone consciously do this? What utility could they possibly derive from getting in my way?
The answer is, of course, that they don’t do it consciously. This behavior is driven by “anchoring,” an aspect of the availability heuristic, which I explore in Secondomics. The concept of anchoring was introduced by Daniel Kahneman and Amos Tversky in their seminal paper “Availability: a heuristic for judging frequency and probability.”
Put simply, anchoring is a way in which we arrive at judgements by adjusting from a pre-defined value. So for example, if I asked you whether you’d pay $10 for my book, and then asked you how much you thought it was worth, you’d probably come up with a higher figure than if I’d asked you whether you’d pay $5 for it first.
I suggest that when I’m running, my fellow pedestrians are using anchoring to determine the optimal moment to cross the road. As they see me approaching, they think about whether to step out before or after I pass, and as a consequence, they have a tendency to end up getting entangled with me more frequently than they would if they disregarded me altogether.
Of course, to support my hypothesis, I really need more reliable statistics, where I pay just as much attention to those who don’t get in my way, as those who do. And I should also remember that I’m just as susceptible to anchoring as my fellow pedestrians. It’s possible that I’m making tiny, unconscious adjustments in my speed as I see pedestrians ahead. However, this is where my iPod leaps to my defense, because it will be the first to tell you you I maintain a steady pace!