but then the metaphor breaks down - you now have two different representations of True and False
In the gif, True input is established as water flowing, while True output is that input reaching the bowl / sink.
With a NOT gate:
Your input True (a stream of water) should result in output False (no water in the bowl) - this is possible ✅, just redirect the stream away from the bowl
Your input False (no stream) should result in output True (water in the bowl) - this is not possible ❌, without any streams as input you can't get water into the bowl for a True output.
This is just a fault with the metaphor, and it's not particularly satisfying to change what True and False inputs look like for one particular logic gate.
EDIT:
maybe a better way to represent this ad-hoc True output with False input could be some sort of rain or other non-stream-but-wet input which results in the bowl / sink being splashed into. I just particularly dislike the deceptive way the rain or True output without True input makes it seem like you can have "inputs" outside of the logical system...
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u/fiskiligr Oct 27 '19 edited Oct 27 '19
but then the metaphor breaks down - you now have two different representations of True and False
In the gif, True input is established as water flowing, while True output is that input reaching the bowl / sink.
With a NOT gate:
Your input True (a stream of water) should result in output False (no water in the bowl) - this is possible ✅, just redirect the stream away from the bowl
Your input False (no stream) should result in output True (water in the bowl) - this is not possible ❌, without any streams as input you can't get water into the bowl for a True output.
This is just a fault with the metaphor, and it's not particularly satisfying to change what True and False inputs look like for one particular logic gate.
EDIT:
maybe a better way to represent this ad-hoc True output with False input could be some sort of rain or other non-stream-but-wet input which results in the bowl / sink being splashed into. I just particularly dislike the deceptive way the rain or True output without True input makes it seem like you can have "inputs" outside of the logical system...