> assuming the map walk operator is bidirectional, which it isn't, but should be... | Hacker News

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kibibu on May 8, 2014 | parent | context | favorite | on: Working on The Witness, Part 1 (2012)

> assuming the map walk operator is bidirectional, which it isn't, but should be

You shouldn't necessarily be able to walk off a cliff and then turn around and walk back up it.

tlarkworthy on May 8, 2014 [–]

oh true. So there will also be another type of boundary which has a direction associated. And a sorta don't know area when you are mid fall with some limited manoeuvrability (non-holonomic movement). Best not to try and categorise the non-holonomic areas in too much detail as that's a rabbit hole.

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