You can get pretty darn high confidences with negation and conjunctions. I can say with great confidence that I am not a 15 story tall Triceratops with glowing red eyes, and I can say with even greater confidence that I am not a 15 story tall Triceratops with glowing red eyes who is active in the feminist movement.
(Incidentally, now you have me wondering how “Linda is a Triceratops and a bank teller” would work in the classic conjunction fallacy example.)
So, as a matter of pure logic, you’re of course correct… but in this particular context, I’m not sure. As I say, once I get down to the 5-9s level, I’m really talking about brain failures, and those can affect the machinery that evaluates negations and conjunctions as readily as they can anything else (perhaps more so, I dunno).
If I made a statement in which I have as much confidence as I do in “I am not a 15 story tall Triceratops with glowing red eyes” every day for a hundred years, would I expect to get them all correct? I guess so, yes. So, agreed, it’s higher than .99998. A thousand years? Geez. No, I’d expect to screw up at least once. So, OK, call it .999999 confidence instead for that class.
What about “I am not a 15 story tall Triceratops with glowing red eyes who is active in the feminist movement”? Yeesh. I dunno. I don’t think I have .9999999 confidence in tautologies.
You can get pretty darn high confidences with negation and conjunctions. I can say with great confidence that I am not a 15 story tall Triceratops with glowing red eyes, and I can say with even greater confidence that I am not a 15 story tall Triceratops with glowing red eyes who is active in the feminist movement.
(Incidentally, now you have me wondering how “Linda is a Triceratops and a bank teller” would work in the classic conjunction fallacy example.)
So, as a matter of pure logic, you’re of course correct… but in this particular context, I’m not sure. As I say, once I get down to the 5-9s level, I’m really talking about brain failures, and those can affect the machinery that evaluates negations and conjunctions as readily as they can anything else (perhaps more so, I dunno).
If I made a statement in which I have as much confidence as I do in “I am not a 15 story tall Triceratops with glowing red eyes” every day for a hundred years, would I expect to get them all correct? I guess so, yes. So, agreed, it’s higher than .99998. A thousand years? Geez. No, I’d expect to screw up at least once. So, OK, call it .999999 confidence instead for that class.
What about “I am not a 15 story tall Triceratops with glowing red eyes who is active in the feminist movement”? Yeesh. I dunno. I don’t think I have .9999999 confidence in tautologies.