Cannonball Run 2006

Yesterday I mentioned how easy it is to accidentally
add a "Curly-Q" to a route by dropping a via point
just a little bit off the path you mean to take. Here
is an example of what I was talking about.

This little "detour" is no big deal on a printed map,
because it's obvious to a human that there's a
mistake. A GPS unit, on the other hand, doesn't know
there's a mistake and will send you right down the
primrose path if it's programmed to. This is the kind
of mistake I am laboring hard to eliminate from my
Garmin GPS version of the route.

# posted by jrsjr @ 9:19 PM