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Comments to #5
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Party 4 year s ago
The green light in a traffic signal also has a little blue in it so red/green colorblind people can tell the difference between the red light and the green light.
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Skeleton 4 year s ago
...#4 I highly doubt, that when they started shuffling giant red and green dots on the sticks - few hundred yrs ago anyone had a clue about all that BS. Same goes for the ship's starboard and port navigation lights - so u need to find better explanation.
3
1.
Party 4 year s ago
The green light in a traffic signal also has a little blue in it so red/green colorblind people can tell the difference between the red light and the green light.
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2.
Skeleton 4 year s ago
...#4 I highly doubt, that when they started shuffling giant red and green dots on the sticks - few hundred yrs ago anyone had a clue about all that BS. Same goes for the ship's starboard and port navigation lights - so u need to find better explanation.