Bond's book is an easy and enjoyable read, even though the author is a bit all over the place, meandering from topic to topic. Then again, this topical meandering is a good fit for a book that’s about getting lost.
So, a few of my observations...
Bond argues that Homo sapiens conquered the world exactly because of its stronger sense of special awareness and his exceptional ability to navigate.
Children are natural explorers and only get stymied when older. And, these days, get much fewer opportunities than decades ago.
Bond describes how rats, and, by extension, other mammals, become familiar with individual spaces; we have a number of different types of ‘place cells’ in our brain, which ‘fire’ when certain geospatial properties are true, such as being in a specific place, our head facing a particular direction, our proximity to an edge, etc.
By certain combinations of these cells firing at the same time, or in a pattern, we become familiar with locations, building internal, intuitive, maps of physical space. We know we have been somewhere before because the same pattern fires.
Bond doesn’t mention it, but it seems that it follows that, if for certain reasons a very similar pattern fires, in a place, or situation, which we have not been in before, we surely must feel that ‘we have been there before’, or perhaps ‘I must have dreamed this’.
Fascinating: head direction cells don’t trigger based on compass points, but in relation to relative orientation with respect to prominent landmarks, within the scope of the individual; you first see the Eiffel Tower? That’s your lode star. Your first see the Louvre? Then that’s it, instead.
“Landmarks are essential for our sense of direction, just as boundaries are essential for our sense of place.”
To entrench their spatial memory in their brains, rats replay the firing of space cells while sleeping, perhaps while dreaming, at 10 to 20 times the speed.
Does this imply that we dream at that speed? A minute of dream time is only three seconds in real life?
‘Grid cells’ are particularly fascinating, firing in precise hexagonal patterns of different grid sizes.
When planning a route, we seem to ‘project’ our future experience in a way that fires the series of place cells in the sequence they would occur when moving through space in the routes we consider as alternatives.
It’s been shown that when using navigational tools, specifically GPS, this no longer occurs. Thus, by us relying more and more on GPS, we literally lose the physical ability to navigate in familiar spaces.
Space and memory are closely related to each other, and to the hippocampus.
This would explain the success of The Memory Palace.
Language, also processed in the hippocampus, is heavily peppered with spatial terms, and triggers the brain in a similar way as to how spatial thinking does.
Related, mental disabilities and a lack in being able to socially and partially navigate are connected.
Those with a strong sense of direction also score highly in extraversion, conscientiousness, and openness, and low on neuroticism. So, navigational skills correlate with personality.
But, also fascinating, a long running study has found no correlation between the personality of a person at 14 and at 77.
Differences in the ability to navigate between men and women appear to be the result of nurture, not nature.
It’s known that, given no external visual cues, people walk in circles, though not always in the same direction.
But, surprisingly, without cues, people will not travel more than around 100 meters from their starting position, regardless of how long they walk for.
Being lost is emotional stress, complete disorientation which makes us think and act irrationally.
To make built up areas easier to navigate, they need to be both legible and intelligible. They are legible when they are easy to make sense of, they are intelligible when they are connected to other places.
“In exchange for the absolute certainty of knowing where we are in space [using GPS], we sacrifice our sense of place.”
“Without a story to tell of our journey, we cease to be wayfinders.”
In the epilogue, Bond talks about psychogeography, and tools and methods that purposely help people to get lost. Dérive app gets a shout out.