handoflixue comments on Boring Advice Repository - Less Wrong
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Related: buy a small and reliable compass. Not a compass app for your phone, but an actual compass. GPS, your own spatial awareness, and reasonable assumptions about geography can all let you down, but north is always north.
Edit: I will now ruin the punchiness of this comment with an explanatory edit. I do a lot of walking around a large city. Google Maps is fairly reliable but leaves much to be desired. Establishing GPS location, battery consumption and occasional out-and-out wrongness are common bugbears, so I started trying to navigate without it.
The biggest problem I found was orienting myself. Surfacing from a subway stop only to have no idea which direction was which, I'd sometimes fall back to GPS just to check what direction I was facing (which Google Maps is really bad at anyway. Anyone who's ever done that "let's walk ten metres in this direction to see what way I'm pointing" thing will know what I mean. I played around with some compass apps, which are just as much of a pain as Google Maps. Eventually I just gave in and bought a compass.
Most areas of most cities have fairly intuitive street layouts, if you learn them. If I'm in Northeast Portland, and I am on a numbered street, then I am either heading east (number gets bigger) or west (number gets smaller). If it is a named street, then I am either heading north (number gets bigger), or south (number gets smaller).
Most named streets do have numbers, but you can also go off the building numbers.
I don't know why it took me 25 years to really accept this, since I grew up being told about this, but most cities genuinely DO use a coordinate system, and learning it makes that sort of thing trivial :)
... in the US.
In Europe, they're intuitive only if you were born there or know a lot of history. (Of course South Parade is further north than North Parade!)
Fair, and thank you for calling me on it.
I get the impression that a majority of LessWrong readers are in major US cities, so I'm leaving it up as useful to them :)