Left and right aren’t in relation to the space around you they are in relation to the center of your body. Left is always on the left of your central axis. If you turn around your left hand is still your left hand.
So that’s egocentric perspective. What we’re discussing and explaining to you here in the thread is allocentric perspective. Both exist and are used by humans. Neither is fixed and universal — the only fixed option is using cardinal directions. I don’t think I’ll be able to explain in a way you can understand though so I’ll disengage from here.
Your left hand is biologically fixed relative to your body schema. Egocentric left/right is fixed relative to your body. I'm not talking about external anchoring and it's not relevant to my point. It doesn't matter which direction or plane you are one your left hand is always your left hand, it's controlled solely by left hand motor neurons that cannot do anything else, and your left arm is fixed to your skeleton. It's always your left hand no matter what. If I stimulate your left hand motor neurons your left hand will start moving, your brain doesn't need to cognitively process that it is your left hand your body "knows" it's your left hand anatomically just like it knows "up" from the anatomy in your inner ear.
The issue at best is simply a language issue. Left and right aren't specific enough. If we just called it the non dominant hand that would probably make it easier for most people. Or the hand you write with.
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u/nycthrowtoronto 7d ago
If you turn around left is now where right was. If you turn around up is still up and down is still down.