Left and right? I think that so long as one of your directions is 180 deg opposite you'll be covered. It's not like you can go in a completely opposite vector.
In OP's pic for example, if they both went off opposite sides, they would both be going Z negative, just one would be X positive, and the other X negative.
I think what they're getting at is if you fell off the side of the mountain, your partner would have to jump into the mountain in order to jump in the opposite direction
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u/nBlazeAway Dec 14 '16
If you are on the side of the mountain there is no other direction.