This chunk felt like the biggest difference between meta-honesty and “tire slash”:
Harry shook his head. “No,” said Harry, “because then if we weren’t enemies, you would still never really be able to trust what I say even assuming me to abide by my code of honesty. You would have to worry that maybe I secretly thought you were an enemy and didn’t tell you.
If I’m following the old rule, you probably want to know in what situations I’d feel good slashing your tires. If I actually felt okay slashing your tires, I’d probably also be invested in making you falsely belief I wouldn’t slash your tires. This makes it hard to super soundly, within one’s honesty code, let someone know when you would or wouldn’t be lying to them.
If I’m following meta-honesty, it seems like I can say, “I wouldn’t lie to you about being on your side unless XYZ doomsday scenario”, and that claim is as sound as my claim to be meta-honest. Now, if I say I’m on your side (not going to slash tires / lie), and you trust my claim to be meta-honest, you can believe me with whatever probability you assign to us not currently being in a doomsday scenario.
This chunk felt like the biggest difference between meta-honesty and “tire slash”:
If I’m following the old rule, you probably want to know in what situations I’d feel good slashing your tires. If I actually felt okay slashing your tires, I’d probably also be invested in making you falsely belief I wouldn’t slash your tires. This makes it hard to super soundly, within one’s honesty code, let someone know when you would or wouldn’t be lying to them.
If I’m following meta-honesty, it seems like I can say, “I wouldn’t lie to you about being on your side unless XYZ doomsday scenario”, and that claim is as sound as my claim to be meta-honest. Now, if I say I’m on your side (not going to slash tires / lie), and you trust my claim to be meta-honest, you can believe me with whatever probability you assign to us not currently being in a doomsday scenario.