Earlier quoted context omitted.
> At the other extreme you have the medical profession where the first thing you learn in medical school is that left/right always refer to the patient's perspective In (musical) theatre we do it the other way around. The we call it "stage left" and "stage right" or "SL and SR" since we use abbreviations everywhere in our notes. It's always from the "stage manager's perspective" which is traditionally (but not always…
In the automotive trade, a vehicle has a "driver's side" and "passenger side". This only partly solves the ambiguity, because of course some countries drive on the left.
Generally the indicators will be operated with the hand that's furthest from the centre so that you can change gear in a manual car and turn the indicators on at the same time.
Australia, Japan, New Zealand amongst others all operate their indicators with the right hand. Not in the UK though.
Even though we drive on the left our indicators swapped to match other EU[0] countries that drive on the right sometime in the 1980s.
I drive a manual car and you just get used to doing both with the same hand. All done via subconscious muscle memory.
In fact I never really gave it much though until going round a corner in an automatic hire car in Christchurch, New Zealand. Wipers scraping across a dry screen, my hand desperately hunting for the missing gear stick as other cars hooted at me...
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0. Let's just ignore elephant in the room for now.